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Grow Light Spotlight: Multi-Purpose LED Grow Lights From ORHFS

There are so many grow lights on the market, so when we find one we genuinely like, we want to make sure our readers know about it. The 16h Cycle Multi-Purpose LED Grow Light from ORHFS is a simple but effective grow light with customization and timers. 

We’ve added more and more grow lights to our home in the last couple of years. We rarely get blue skies during the winter, and our tropical plants want bright indirect light. So we’re always looking for an artificial light that meets our needs.

In this review, we’re looking at the features of this light, so you can decide if it’s right for you.

How Big Is This Grow Light?

The multi-purpose LED grow light is 14” deep, 10” wide,” and 65” high. Its height allows it to function as a floor lamp as much as a grow light. 

It’s also fairly lightweight, weighing slightly more than 5 lbs.

What Can You Grow?

This grow lamp gives you the ability to grow a wide variety of plants, including those that bloom (think: tomatoes). We use ours for houseplants, including Dieffenbachia, Pink Princess Philodendron, Purple Waffle plant, Golden Pothos, and a few different Coleus varieties. 

It’s also a great option if you’re trying to grow tomatoes indoors or potatoes indoors. See our section below on the three spectral modes and ten brightness levels.

Spectral Modes

There are three spectral modes for this grow light, which is a nice touch that I don’t see on a lot of smaller units.

It has a white, full-spectrum “mixed” light, red light (good for blooming plants), and a blue light. I’m a fan of full-spectrum white light for my houseplants, so I normally keep it on this setting. But I’m including some pictures of how the red and blue options look, as well.

The spectral modes and brightness settings are controlled with a small panel along the cord of the unit. It’s very simple and straightforward.

Full Spectrum

Blue Light

Red Light

Brightness Settings

This lighting system has 10 brightness settings, starting at 10% and going all the way up to 100%. You can adjust the lamp to provide your plant with the optimal amount of light. For our needs, I keep mine at 100%. 

I know a lot of the plants I mentioned above are considered indirect-light plants, but they do really well with direct LED light, which doesn’t burn them or produce unwanted heat.

Timer Functionality

My favorite aspect of this lamp is its timer. This system has an auto circular-memory timing function, which is just a fancy way of saying that you can preset the time that it’s on each day.

It has three timing functions: 4 hours, 8 hours, and 12 hours. Once set, your grow light will turn on and off at the same time every day – even if you’re on vacation! 

Setting this up is simple and doesn’t require the use of an app.

What Comes With This Grow Light?

When you purchase this model, you can expect the following in the box:

  1. Four separate grow light tubes
  2. Telescopic rod – this is a 360-degree adjustable gooseneck, which allows you to point the lights in any direction
  3. Remote control panel for adjust the light intensity and spectral type

How Bright Is This Grow Lamp?

This product is an energy-efficient LED system with 40-watt lights. This is more than enough for most indoor houseplants.

How Long Does The Light Last?

Since this multi-purpose grow lamp is an LED fixture, it will last much longer than a traditional lighting system. ORHFS says that their light has a lifespan of up to 50,000 hours. If you’re keeping your lights on for eight hours a day, that’s just over 17 years of light life. That’s a massive amount of time for anything to work, especially a grow light.

Overall Review

The 16h Cycle Multi-Purpose LED Grow Light is one of our favorite grow lights of 2022. It’s affordable, simple to use, has some great functionality – and its gooseneck arms are incredibly versatile. Our household is a big fan of this grow light.

Looking for other artificial lighting options? Check out our small grow light guide here.

Grow Lights Vs. Regular Lights: How Are They Different And What Should You Use?

When growing indoor plants, you need to think about your lighting needs. And while natural light is ideal for plants, it’s not always an option. So when considering artificial light for plants, some growers are debating a grow light vs. regular light. In this article, we’re looking at this debate, going through what’s best for plant growth, providing options for indoor lighting, and giving basic information to help you make the most of your indoor gardening experience.

Why Use Regular Lights?

Before we get started, I’m going to make some assumptions about why you’re reading this. There are a couple of reasons you might want to use regular lights instead of grow lights.

  • You already have a lot of regular lights and don’t want them to go to waste
  • You’re new to the indoor gardening space and want to dip your toe before committing (i.e., you don’t want to spend money on grow lights yet)
  • You’re not able to afford grow lights
  • You’re curious if the wavelengths can create similar results as traditional grow lights

These are all completely legitimate reasons for the discussion of grow lights vs. regular lights. That said, for the most part, regular lights (we’ll define what this means in a second) aren’t going to have as good of intensity – or a great of light wavelengths – as most modern grow lights.

That’s not to say there aren’t some use cases for regular lights in the indoor gardening space. In fact, several regular light bulbs and lighting fixtures produce significant blue wavelengths – which is suitable for foliage growth, seedlings, and seed germination.

So while, holistically, grow lights are the winners in the grow light vs. regular light competition, this article is going to be more about what you can do – not necessarily what’s the most optimum for plant growth for commercial indoor gardeners. And for a lot of indoor growers, this is enough.

The Youtube channel Gardening in Canada does an excellent job of laying out the conversation:

So let’s dive into the definitions of regular lights vs. grow lights.

Types Of Lights: Definitions

We should begin by saying that there are many types of lights, and under each category, some lights have been manufactured to produce better results for plants. Let’s go through the differences of each to give you an overview of the lighting space.

Incandescent Lights

This is the classic light that some of us still use at home. With this type, electricity is passed via a filament, which heats up and produces light.

Options in the incandescent category produce a lot of red light but don’t generate much blue light. Because of that, they’re a pretty poor option for growing plants. They also emit a lot of heat, so they’d need to be further away from the plants to protect them from burning.

Although there is still some healthy debate over which lighting type is ideal for indoor cultivation, no one thinks regular incandescent bulbs are still a viable alternative. And, while LED light products improve year after year, incandescent light has mostly stayed the same.

Halogen Lights

Halogen lights are an enhanced version of incandescent lights. With this form of lighting, electricity goes through a socket and travels through a tungsten filament. The main difference between halogen and incandescent lights is that halogen bulbs have halogen gas, while incandescents have argon gas.

Because of this, halogen bulbs shine a little brighter and last longer than incandescent alternatives. Halogens are considered 20% more efficient than incandescents.

Fluorescent Lights

Fluorescent lighting encompasses CFLs, linear fluorescent tubes, T5 bulbs, T8 bulbs, T12 bulbs, and other types of fluorescent lighting. Stores, schools, workplaces, and even indoor gardening employ this adaptable lighting solution. Electricity enters fluorescent fixtures through the ballast and feeds into the metal pins on both ends of the fixture to produce light. The gasses react as the voltage passes down the tube, creating light visible to the naked eye. Fluorescent lights are less expensive to buy, have a smaller carbon footprint, and are more energy-efficient than incandescent bulbs. And T5s are well-known for supporting seed germination.

In terms of regular fluorescent tubes, they’re a surprisingly effective artificial light source for some plants at home. As a whole, they a cooler – both in color and temperature. Standard fluorescent bulbs work well for some indoor plants, specifically low-light plants.

Ceramic Metal Halide Lights

With ceramic metal halide lights, an electric current runs through metal halide gas and mercury, producing light. This option falls under the high-intensity discharge umbrella. It has a high-quality light emission that is 3-5 times more efficient than incandescent lights. However, they take a long time to heat up, so unlike LEDs, you won’t be able to turn on the light right away.

High-Pressure Sodium Lights

HPS systems were the industry standard for commercial growers because they are less expensive, have a higher intensity, produce a lot of red light.

HPS lights also produce a lot of yellow light, which is why they’re commonly employed for security and street lighting. Because of their enormous outputs and broad color spectrum, HPS lights were chosen by indoor and greenhouse growers for many years. It’s not been until the last few years that LEDs have started dethroning them as the king of the grow lights space.

LED Lights

LEDs are the up-and-comers in the field of grow lights. They’re practical, energy-efficient, and getting cheaper every year. Two semiconductor materials, one charged positively (protons) and the other negatively (electrons), make up LED lights. Energy is emitted in the form of a photon when these two particles clash. The hue of the light is determined by the amount of energy released. The light is then focussed and directed in a precise direction. An LED grow light is well-known for generating a large amount of light, particularly full-spectrum light.

Regular LED lights are becoming more common in homes, as they last longer and are more energy-efficient. Entire countries are beginning to phase out halogen and incandescent bulbs to lessen their overall national carbon footprint. Since they produce a broader spectrum of light and not as much heat as the alternatives, they are often considered acceptable for low-to-medium light houseplants.

The main downside with LEDs is that they cost a lot of money compared to other options. Fortunately, though, as the technology improves, the price continues to drop.

How Do Plants Use Wavelengths?

The color of the light (or wavelengths of light) is exceptionally important for plants. There is still a surprising amount of debate about this, but plants use all of the wavelengths of visible light, including blue light, red light, green colors (although some growers will tell you differently), and more. There is even value to the non-visible light, such as the far-red and ultraviolet parts of the spectrum.

If we want to know the best light for plants, start by looking in the sky. The sun emits the entire spectrum of light. This is what we call full-spectrum light or direct sunlight. LEDs, specifically, can mimic this type of light, which is why we often credit them as having the proper spectrum of light for plants.

Most indoor plants flourish in full-spectrum bulbs (also called white light), which produce a balance of cool and warm light that simulates the sun. Seedlings, houseplants, culinary herbs, and a variety of other plants thrive with them.

The blue spectrum, in general, promotes the development of leaves, stems, and overall vegetative growth. Red wavelengths promote flower development, making it crucial for fruit-bearing plants. However, there is a wealth of information available on the unique advantages of red and blue lights. Some of it is also deceptive.

A good video on frequent misunderstandings about the color spectrum, notably red and blue light, may be found here:

https://youtu.be/NMVP7Nvew0A

What Do We Mean By Regular Light?

Most people would say that a regular light measures between (on average) 2,000 and 8,000 Kelvin, with lights on the lower end of the scale having a warm, yellowish-orange tint and on the higher end having a cool, almost bluish tint. Kelvin represents the color temperature of the light bulb.

Photo by upshine.com

This light is designed for two primary reasons – it’s used for people to see, and it’s used to make people feel a certain way about a room. A warm light, for instance, is said to make a space feel cozier and is sometimes recommended for living rooms.

Humans also deal in lumens, which is the measurement of light generated from a bulb. When purchasing bulbs for most home spaces, you typically need about 10 lumens per square foot. This means you can take your square footage and multiple it by 10-20. That said, a bathroom usually has more lighting, meaning you would want closer to 70-80 lumens per square foot.

Photo by Alcon Lighting

Definition Of The Day: Foot Candles

A foot-candle is a British term for the measurement of lumens per square foot.

Here’s Where It Gets Tricky: PAR Vs. Lumens

While humans deal in things like Kelvin and lumens, plants experience light very differently. When measuring light for plants, we look at the following variables:

Photosynthetic active radiation (PAR)

PAR is the light at the wavelengths of 400 to 700, which is typically considered the light that drives photosynthesis.

Photosynthetic Photon Flux (PPF)

PPF refers to the measurement of PAR produced by a light source per second. This is expressed in μmol/second.

Photosynthetic Photon Flux Density (PPFD)

PPFD is the amount of PAR that actually reaches your plants. A light is scattering photons from its lights, so only a portion is actually getting to your plants’ leaves.

Can You Convert Lumens To Par?

Okay, so if humans deal in lumens and plants deal in PAR, surely there’s a way to convert them. Again, this is tricky. You won’t be able to convert lumens to PAR unless you have the spectral power distribution (SPD), which is a graph of the energy levels of your light – shown as wavelengths.

If you really want to do this, we recommend starting with this calculator from Waveform Lighting.

Do You Actually Need Complex Conversions?

We’re getting in the weeds a bit with this. In truth, most of us don’t need to understand the science between what humans and plants experience in terms of light.

Because of that, let’s go into the use case of when you can use a regular house light – what plants they work for – and how they compare to traditional grow lights.

Did You Know?

Did you know that, beyond lights, there are several factors to consider when growing plants indoors? When growing indoors, you need to also consider variables like humidity, growing mediums (LECA balls), fertilizer, watering needs, and more.

four t5 grow lights fixtures

Which Regular Lights Work For Indoor Growing?

In terms of regular lights, you likely won’t be able to access the full spectrum of light in a single bulb. Blue light, though, is the primary color used for leaf and other foliage growth. So you want to use/purchase a cool light on the Kelvin spectrum – approximately 6,000 – 7,000 Kelvins. There are a surprising amount of houseplants that will do well under regular lights like these.

In terms of the type of bulb used, fluorescent lights and LEDs will be your best “regular light” options.

What Plants Grow Well Under Regular Light?

According to the University of Missouri Extension, low light plants need as few as 10-foot candles of light. For these low-light plants, a “single fluorescent tube such as a 2-foot 20-watt tube or a 4-foot 40-watt tube” provides enough light for the plants in this category.

Here are some plants that do exceptionally well under regular lights. These are also plants that are considered low-light plants.

How Do I Know If My Plant Is Getting Enough Light?

The plant’s growth pattern might give you a decent idea if it’s getting enough light. No growth could suggest a lack of light, but it could also indicate other issues. Long internodes (stem length between leaves) or smaller-than-normal leaves, pale green stems and foliage, loss of leaves, and leaf yellowing could all be signs that your plants aren’t getting the light they need.

How Close Should My Regular Light Be To My Plants?

For low-light plants, you don’t usually need to worry about how close your lights are. Simple overhead lights should do fine, especially if they’re LEDs or cooler fluorescents. A plant that requires medium-to-bright light – such as the Monstera in the video above – will need a light much closer to the plants’ leaves. 

Medium-to-high light plants may need a greater light intensity, so keep the bulbs within a foot of the leaf canopy.

You may need to adjust your light based on the needs of your plants. If it shows signs listed in the section above, you may need to bring the light closer or add additional lights. If you notice the edges of the leaves start to burn or turn black/brown, it may be a sign that your light is too close to the plant.

How Long Should I Have My Lights On My Plants?

A typical low-light plant needs about four hours of light exposure. But since you’re growing under a regular light, the lower light quality could mean that you need to extend the exposure. Start with at least six hours a day on low-light plants and see how your plants respond.

Conclusion

When it comes to regular lights vs. grow lights, it all depends on what you’re trying to accomplish. If you’re an entrepreneur growing food for the farmer’s market, regular lights do not make sense. But if you’re just trying to start seeds or grow low-light houseplants, everyday lights, specifically LEDs and fluorescents, do a fine job at keeping your plants alive and thriving. Like all things with gardening, the type of plant is a significant consideration, and you should expect to experiment to get the best results for your garden.

Are you using regular lights for your indoor plants? We want to know about it! Send an email and any pictures you have to [email protected].

T5 vs. T8 Grow Lights – The Light Guide for Indoor Gardening

When growing indoors, you have a lot to consider. There’s humidity, temperature, soil, etc. – and this can be even more complicated if you’re working with hydroponics. One of the most significant considerations is your grow light, and indoor growers always ask about T5 vs. T8 lighting. In this article, we’re looking at the differences between these two options, so you can decide what’s best for your indoor garden.

Choosing the right indoor lighting source can mean the difference between a thriving garden and a disappointing one. A grow light is a multi-purpose light bulb that mimics the energy and influence of UV rays or sunlight exposure on plants at all stages of their development. This light allows users to cultivate plants indoors or in regions with unideal weather.

While most artificial alternatives to sunlight are not prohibitively expensive, choosing the incorrect one could waste time and effort for indoor growing. Accordingly, it’s critical to compare the T5 and T8 grow lights to determine which is best for you.

So, what are the most significant differences between these two technologies? Which one is better for your garden? We’ll consider some of the most crucial factors and differences between these options to make an informed decision on which one to buy.

Factors To Consider When Purchasing A Grow Light

There is a wide range of light qualities out there. Below are the primary considerations for indoor growing.

  • Initial Cost – the cost of the bulb, the fixture, the setup, and accessories
  • Longevity – how long the bulb lasts
  • Life-Time Cost – the overall cost of purchasing and running bulbs, longevity, and quality of light
  • Energy Efficiency – the amount of energy used to run the fixture and light
  • Color Temperature – whether blue light, red light, or anything else on the spectrum
  • Light Output – the amount of light produced
  • Light Received – the amount of light that the plant can absorb
LED grow lights

Why Is Comparing Grow Lights Difficult?

Grow light companies and distributors use a lot of fluffy language to market their products. You’ll see words like lumens and light intensity used, as well as acronyms like PAR, PPF, and PPFD.

Here’s what some of these definitions and acronyms mean:

PAR Vs. Lumens

It’s easy to overlook the fact that plants and humans have incredibly different perceptions of light. Humans use photopic vision to sense color, which is measured in lumens. Photosynthetic active radiation (PAR) is the light wavelengths that drive photosynthesis in plants.

PPF: Intensity Of Light

PPF (Photosynthetic Photon Flux) refers to the total amount of light produced per second by an LED, T5 bulb, or other light sources. This is what we refer to as the intensity of the grow light. The unit of measurement is micromoles per second (umol/s).

PPFD: Measurement Of Light Received

The photosynthetic photon flux density (PPFD) is used to measure the quantity of PAR that travels from your fixture to your plants. In other words, this is a measurement of the PAR emitted by the lighting fixture at the plant.

What Are The Different Types Of Light Available?

There are several grow lighting options, but they are typically divided into a few different categories.

Ceramic Metal Halide Lights

This option is under the high-intensity discharge umbrella and creates light when an electric current passes through metal halide gas and mercury. It is known for having a high-quality light emission 3-5 times more efficient than incandescent lights. That said, they take a long time to heat up, meaning you won’t have your light immediately, as in the case of options like LEDs.

High-Pressure Sodium Lights

HPS systems were the industry standard for a long time because they were cheaper, had a higher intensity, and produced a lot of red light.

They also emit a lot of yellow light, which is why they’re widely used for street and security lighting. For many years, HPS lights were preferred by indoor and greenhouse growers because of their large outputs and broad color spectrum.

Incandescent Lights

This is the old-timey option that requires electricity to run through a filament, heat it, and produce light. This is the one you can thank Edison and Swan for making.

For anyone reading at home, you probably don’t need an incandescent grow light. There’s still plenty of healthy debate between which lighting is best for indoor growing, but I don’t know of anyone who still thinks incandescent lights are a viable option. And while products under the LED umbrella improve every year, the incandescent light is just flickering into obscurity.

Fluorescent Grow Lights

Fluorescent lighting is an umbrella category over CFLs, linear fluorescent tubes, T5 bulbs, T8 bulbs, standard T12 bulbs, etc. This versatile lighting option is used in stores, schools, offices – and sometimes indoor gardens. To produce light, electricity enters the fluorescent fixtures through a ballast, feeding into the metal pins on both ends of the fixture. As the electricity flows through the tube, the gasses react and produce light visible to the human eye. Fluorescent tube lights are cheap to purchase, pretty compact, and more efficient than incandescent bulbs. T5s are specifically known for seed starting.

Also read: 59 AeroGarden Tips and Reviews For Instant Success

LED Grow Lights

LEDs are the up-and-coming stars of the grow light world. They’re practical, energy-efficient, and becoming more affordable by the year. LED lights are made up of two semiconductor materials, one charged positively (protons) and the other negatively (holes) (electrons). When these two particles collide, energy in the form of a photon is emitted. The quantity of energy released determines the color of the light. After that, the light is focused and cast in a specific direction. LEDs are known for producing a lot of light, specifically full-spectrum light.

Want to see how LEDs compare? Check out our LED Grow Lights Vs. HPS article here.

LED Best Seller List By Value

T5 vs. T8 – The Best Grow Light for Indoor Gardening

T5 and T8 lamps can be the primary illumination source for your plants or merely as supplemental options. Both lights have advantages and disadvantages, making it challenging to determine which is best for your situation. Before you choose, make sure you know what you want and need.

T5 vs. T8 – What’s the Difference?

For starters, T8 bulbs have a diameter of eight-eighths of an inch (equivalent to 1 inch). The is what the “8” in its name means.  T5 bulbs, as you might have guessed, are five-eighths of an inch thick, making them the thinner option. Because the two tubes are not interchangeable, this is a crucial consideration when looking at the fixture you want over your garden.

T5 and T8 tubes are available in various color temperatures and lumen outputs. Suppose you’re looking for fluorescent tubes to use in an office devoid of natural light, for example. In that case, you’ll want to choose one with a lower lumen output, a warmer color temperature, or both, depending on the environment. Excessive light output or a color temperature that’s too cool can harm your plants and limit their growth.

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T5 or T8 Grow Lights: Which Is Better?

T8 grow lamps are preferred by many indoor gardeners because they provide more overall lumens, have a longer life, and are more efficient than standard fluorescent bulbs. However, T5 high-output bulbs have an even more significant advantage in being roughly 9% more efficient than T8 bulbs, allowing them to generate more light in a smaller space while using less wattage (75 to 90 lumens per watt). T5 also has a high color rendering index (CRI), making them more visually appealing.

Light Spectrum & Wavelengths

While many of the best grow lights give off the full spectrum, others primarily produce a blue or red spectrum light. The ranges of the T5 and T8s are relatively similar to one another and are equally customizable. T5 and T8 have nearly identical color rendering, which means they have very similar spectrums. However, because the T5 is brighter than the T8, the extent to which the plants can receive the entire light spectrum may vary.

Bulb Quality & Intensity

The T5 has a better lumen-to-watt ratio than the T8, implying that its output is more efficient and brighter per watt of energy used. Another feature that makes the T5 the ideal light for performance is that the illumination is more focused and concentrated in a single spot due to its smaller diameter. While T5 lights are brighter and more potent than T8s, they can cause significant glare while over-stimulating the plants.

Heat Output & Temperature

Because the heat emits from a broader area, the T8 grow light is cooler and safer to touch than the narrower T5 grow light. Accordingly, plants are more likely to be damaged if they touch a T5 bulb than a T8 bulb. When it comes to temperature, keep in mind that T8 performs best at 28°C (82°F), while T5 performs best at 35°C (95°F).

t5 light with plants

Fixture Lifespan & Efficiency

The T5 generally has a longer lifespan and experiences less deterioration than the T8, which is more sensitive to frequent on and off switching. However, if you leave the grow lights on all the time–– which we don’t recommend–– both should last the same amount of time. They’ll both last roughly 36,000 hours if you use the 12/12 light cycle (12 hours on, 12 hours off). The T5 also has a better lumen-to-watt ratio than the T8, meaning its output is more efficient and brighter per watt of energy used. 

T5 Grow Lights may be found at most hardware and specialized stores like Home Depot, as well as nurseries, and can cost anywhere from $10.00 to $200.00. In terms of life expectancy and wattage, the higher-end models appear to have more favorable consumer evaluations, while the lower-cost models are more budget-friendly for new gardeners.

Size Options & Customization 

T5 lights have a diameter of five-eighths of an inch. T8 light bulbs are 40 percent larger, with a diameter of one inch– or eight-eights. A T8 grow lamp is about the same size as a nickel, while a T5 model is around the size of a dime. The T5 then is more compact than the T8. Regardless of size, the ranges of the T5 and T8s are relatively similar to one another and are equally customizable. 

Price Considerations & Limitations

Generally, T8s are a little less expensive than T5s. Because of the T8’s shorter lifespan caused by frequent on and off switching, you’ll have to replace it more frequently and, in turn, spend more money. Over time, T8s will become more expensive than T5. Note that if you plan to install the T8 in a location that demands light 24 hours a day, it will be cheaper in that it will last about as long as the T5.

T5 vs. T8 Grow Lights Guide

Whether you’re a novice or a seasoned grower, a grow light can provide numerous benefits to you and your garden. With its rays and warmth, a grow light will assist your plants in flourishing from average to excellent quality and higher yields. T5 and T8 grow lights will help you reduce the chances of losing a plant to poor weather conditions while also improving your garden’s durability.

What’s the T?

Fluorescent lights, also known as fluorescent linear tubes, are classified based on their wattage, shape, and diameter. The “T” in T5 signifies that the bulb is tubular, and the “5” indicates that it is 5/8 inch in diameter. The larger T8 (eight-eights, one-inch) tubes are also popular. The T is simply a code that indicates the bulb’s shape and output. It specifies the level of energy efficiency as well as the diameter of the lamp tube.

How Much Light Do T5 & T8 Lights Put Out?

The lumen output capabilities of T5 versus T8 bulbs is another feature that distinguishes them. A regular 4′ 54-watt T5HO linear tube, for example, will typically produce around 5000 lumens per tube, whereas a standard 4′ 32-watt T8 light will generally have about 3000 lumens per tube. When weighing the advantages and disadvantages of the two tube options, keep in mind your garden’s lighting requirements. If you don’t need as many lumens, the lower-wattage T8 is a better alternative because it uses fewer lumens and consumes less power. If you need a higher level of illumination, the T5 may be the better choice for you.

How Many Light Fixtures will I Need?

Answering this question is dependent on the amount of space available in your grow area. However, a good rule of thumb is to get T5 or T8 (or both!) fixtures that are the same size as your grow room ceiling height. When you have an 8×8 grow area, you should consider getting two 2×4 fixtures to fill the space. ​

Are T5 Tubes Being Phased Out?

Have no fear – T5 fluorescent tubes are still being produced. That said, because switching to LED lights can lower energy costs while maintaining relative efficiency, it’s not a stretch to think that T5s and other fluorescents could one day be removed from shelves. The UK government, for instance, is planning to remove fluorescent lights from stores in September 2023 to combat climate change.

Can I Replace a T5 with an LED Grow Light?

You can simply switch your T5 fluorescents with LED tubes designed to work in the same system. Doing this can cut your energy prices by as much as 50%.

Do I Need a Grow Room?

Grow tents are a good idea for controlling variables, including light, water, temperature, and humidity. With the reflective material, grow tents can help you maximize the efficiency of your grow lights, as well. While not necessary for everyone, grow rooms or grow tents make an excellent option for indoor growers.

T5 vs. T8 Grow Lights – Everything You Need to Know

The T8 tube, like the T5, uses electrical circuits to produce light and is available in standard 2, 3, 4, and 5-foot lengths. T5 fluorescent lamps, on the other hand, are distinguished from T8 bulbs by their significantly smaller size. T5 tubes are 40% smaller than T8 fixtures, but they can provide just as much, if not more, light in the same amount of space. More T8 fixtures are required to produce the same amount of light as fewer high-output T5 bulbs. T5 lights are more expensive than T8 lights, though they require less maintenance than other fluorescent bulbs. When paired with the T5 bulb’s capacity to deliver more light (lumens) than other bulbs, your garden fixtures will save money in the long run.

Benefits of T5 Grow Lights

T5 lights are efficient, they last a long time, and they don’t produce much heat. More specifically, the T5 grow light takes the lead over the T8 grow-light in terms of efficiency. The T5 has a higher lumen to watt ratio than the T8, which means its output is more powerful and brighter per watt of energy. The T5 is also more efficient because its light concentrates in a single spot because of its smaller diameter–– more watts per cubic centimeter. Its energy efficiency also translates to a longer life-cycle, meaning less maintenance and replacement for you. Lastly, its smaller size and better efficiency result in lower overall temperatures.

There are many T5 options out there, but here are a few options to get you started.

Benefits of T8 Grow Lights

When we consider the actual quality of the light, the T8 is often the superior lamp because it has less glare and is, therefore, more effective in household usage and sometimes similarly for plant growth. The T5 light is brighter and more potent than the T8, though the glare can misdirect its wavelengths. At the very least, the T8 may be the more visually appealing option. T8s also have the slight advantage of a marginally cheaper upfront cost.

Downfalls of T5 Grow Lights

T5 lights, despite their higher efficiency, necessitate more expensive fixtures. Another disadvantage is that those fixtures may have shorter life expectancies to accommodate the higher output, often charting roughly 10,000 hours compared to T8 tubes’ average of 30,000 hours. And, if the lights are hot, the T5 bulb, as opposed to the T8, is more likely to damage your plants if they make contact with each other. Again, because the T8 bulb generally creates less heat wider heat distribution, your plants can be nearer to it and remain comfortable. It’s important to note, though, that the T8 bulb isn’t entirely cool; it’s impossible.

Downfalls of T8 Grow Lights

Depending on the size of your indoor growing project, the cost of energy efficiency (or lack thereof) in utilizing T8 bulbs can rise significantly, so it’s best if you choose more energy-efficient lighting solutions. With that in mind, T8 grow lights are acceptable for the early stages of growth when your setup is relatively small. Their reduced illumination capacity can stifle and inhibit growth during the blooming and vegetable stages of more extensive gardens but are more than sufficient for a plant or two.

When Should I Use T5 Grow Lights?

When it comes time for the vegetative and flowering phases, T5’s are about 12% more efficient.

The best T5 grow lights are generally ideal for plants about to flower since they require more intense light and provide more watts per cubic centimeters. Another argument favoring the T5 for flowering is that since T8 bulbs are less severe, you’ll need to place them closer to your plants to achieve the same results as T5. In this case, T5s are lower-maintenance.

When Should I Use T8 Grow Lights?

For use in cloning, seeding, and rooting, T8s might be your best bet. Gardeners also tend to utilize the T8 for cuttings and seedlings. Apart from horticultural applications, aquarium owners are primary users of the T8 bulb. Regardless of how growers commonly use these lights, they may help stimulate plants in a commercial or domestic setting while giving excellent supplemental lighting in greenhouses.

Types of T5 & T8 Lights

Fluorescent

T5 fluorescent lights are worth highlighting mainly because they are by far the most common form of a T5 fixture used for indoor gardening. Many gardeners have moved away from more powerful lighting such as HPS bulbs (high-pressure sodium) or MH to the more efficient T5 fluorescent lights. Fluorescent T5 and T8 fixtures can also keep your initial costs low if you’re just starting off sprouting plants indoors. You shouldn’t necessarily buy the cheapest lights available but instead, get the best quality your budget allows. The T5 will still be less expensive than most other lighting solutions. ​

LED

Some growers use LEDs and incorporate them into a T5 or T8 system, which is totally doable. You can buy LED tubes to replace your T5 lighting fixtures and convert your entire system to LED. The advantages for LED options, in this case, are the same for an LED light in general: Less energy consumption, low-temperature output, and an exceptionally long life span. However, if you choose T5 or T8 LED bulbs over fluorescent lights, you’ll face the same problems as you would with any other LED bulb. Also, double-check that the model you’re using is compatible with LEDs!

vertical indoor garden with GE grow lights

Fixture Features to Look For

Sizing

T5 light bulbs and T8 tubes have consistent diameters (5/8” and 8/8”, respectively), but the size of their fixtures will vary, providing you with versatile options for your grow room. You can get just about any length and quantity of bulbs you want or need. When picking which to buy, think about how much space you have in your indoor garden. If you don’t need some of the bulbs, you can quickly turn them off. You can’t, however, turn on bulbs you don’t have!

Bulb Temperature

Most growers use fixtures with 6500K bulbs because many commercial farmers employ these lighting systems to harvest microgreens, seedlings, and plants in their vegetative state. However, in a T5 or T8 system, you can produce flowering and fruiting plants all from the same setup. You’ll also need to consider 3000K lights for the more delicate phases of growing, and they often come in five-packs with two-foot and four-foot lengths.

Reflector Style

The reflector is a significant component in the T5 bulbs’ superior performance over the T-8.

Consider a ray of light coming from the bulb: it’s pointed up toward the reflector, away from the plants. A simple flat mirror reflects the beam of light from the bulb directly back at itself, while good reflectors often have an indentation directly above the bulb that reflects the rays sideways around the bulb and down onto the plants. A reflector can redirect the light “spilling” out of the sides of your grow room.

Furthermore, there are two primary grow lamp styles: rectangular reflector and gull-wing reflector. You can utilize encased mirrors and set your lights closer to your plants for the best light coverage, but you can use the gull-wing type if you need to put suspend them further from the garden. 

Extra Features

Keep an eye out for added features that will help you get the most out of your T5 and T8 lights. The most important is the ability to manage bulbs separately, either by dimming or using switches that turn off some lamps while leaving others on. With these capabilities, you may save electricity by providing plants with the light they require to flourish. Such customization is beneficial for starting seedlings because their light requirements are so low compared to those in the vegetative phase of a bushy plant.

Additional Considerations

The Size of Your Grow Room

Measure your growing area to determine the best lighting system you can fit before you consider buying new grow lights. You may need to purchase additional units and stack them side by side to get the most coverage, depending on the size of your room. Because of your grow room setup, one single unit may not be enough to provide the coverage you require.

Your Budget

Choosing between a T5 or T8 fixture will be considerably more straightforward once you’ve determined your color temperature and lumen output requirements, as well as your budget.

T5 grow lights are pretty inexpensive compared to other types of lighting. It’s simple to start gardening with T5 lamps in particular, but adding more will add to the cost, so do your research before committing.

Your Existing Lights

If you currently use grow lights, think about how adding T5 or T8 lights can enhance your arrangement. Unless you plan to replace your existing lights entirely, you should calculate all your lights’ overall energy cost and light output before purchasing anything more.

The Color Temperature of the Bulbs

Because T5 light bulbs are replaceable, double-check what your system includes. Fluorescent fixtures thrive in the vegetative stages of growth, so you should always use bulbs suited for them. However, don’t be frightened to bring up some flowering bulbs.

The Manufacturer

The manufacturer counts a lot, as it does with many other types of indoor grow lights, or any product, for that matter. Use established brands with a good history and authority in the gardening world. There’s a lot of competition in the space and every manufacturer wants a piece of the pie– avoid unidentified knockoffs.

What You’re Growing

Once you’ve got the light bulbs, what are you going to grow? If you want to cultivate huge fruiting plants, you’ll probably need to increase your size and power needs. T5 grow lights are ideal for seedlings, microgreens, and any plant you harvest before flowers. For use in cloning, seeding, and rooting, T8s are your best choice. 

What about T12 lights?

You may have heard of another similarly named lighting. Gardeners used to choose between T5, T8, or T12 fittings for your garden in the not-too-distant past. As you may have guessed, they were twelve-eighths of an inch in diameter, or more simply, an inch and a half. Different technologies develop, however, and things change– including lighting options. T12 bulbs are an older model of fluorescents, and because the fixtures are so inefficient compared to competing technologies, the United States Department of Energy banned their production in 2012. While new T12 bulb fixtures are no longer available, you might still find them in used markets and existing gardens. Though I’m not sure why you’d want to look for them; they’re terrible.

Conclusion

There are so many light bulbs and fixtures to choose from in the indoor grower space. Two of the most traditional options are the T5 and T8 fluorescents. 

The main difference between the T5 and T8 Grow Lights is the diameter of the fluorescent tubes. T5s are 5/8″ in diameter, while T8s are 1″ in diameter. Also, T5s are slightly shorter than T8 fluorescent tubes. This is an important note as it means it could be difficult to swap out T5s and T8s on the same fixture. T5 lamps are smaller and more efficient than T8 bulbs.

T5 lights are the winner between the two, they do cost about 2x more than T8 options. While T8s are cheaper upfront, T5s are a more affordable option long-term and are great for most growing needs.

Get started with your indoor garden and purchase a grow light today.

If you need help hanging a new set of artificial lights, and happen to live in the Chicago area like us, consider calling Fix It People to take care of it for you!

T5 vs. LED Grow Lights: Which Should You Buy For Indoor Growing?

When growing indoors, you have a lot to think about. There’s humidity, temperature, soil, etc. – and this can be even more complicated if you’re working with hydroponics. One of the most significant considerations is your grow light, and indoor growers always ask about T5 vs. LED grow lights. In this article, we’re looking at the differences between these two options, so you can decide what’s best for your indoor garden.

We should point out that the debate between these two types of lights rages on, but the good news is that there’s still plenty of space for both LED and T5 bulbs. We’ll lay out opportunities for using both of these two options.

Factors To Consider When Purchasing A Grow Light

There is a wide range of light qualities out there. Below are the primary considerations for indoor growing.

  • Initial cost – the cost of the bulb, the fixture, the setup, and accessories
  • longevity – how long the bulb lasts
  • life-time cost – the overall cost of purchasing and running the bulb, as well as longevity and quality of the light
  • energy efficiency – the amount of energy used to run the fixture and light
  • color temperature – whether blue light, red light, or anything else on the spectrum, we’re looking at which options make the most sense for your situation
  • light output – the amount of light produced
  • light received – the amount of light that the plant can absorb
plant growing under purple light

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T5 vs. LED Grow Lights: Why Is Comparing Grow Lights Difficult?

Grow light companies, and distributors use a lot of fluffy language to market their products. You’ll see words like lumens and light intensity used, as well as acronyms like PAR, PPF, and PPFD.

Here’s what some of these definitions and acronyms mean:

PAR Vs. Lumens

It’s easy to overlook the fact that plants and humans have incredibly different perceptions of light. Humans use photopic vision to sense color, which is measured in lumens. Photosynthetic active radiation (PAR) is the light wavelengths that drive photosynthesis in plants.

PPF: Intensity Of Light

PPF (Photosynthetic Photon Flux) refers to the total amount of light produced per second by an LED, T5 bulb, or other light sources. This is what we refer to as the intensity of the grow light. The unit of measurement is micromoles per second (umol/s).

PPFD: Measurement Of Light Received

The photosynthetic photon flux density (PPFD) is used to measure the quantity of PAR that travels from your fixture to your plants. In other words, this is a measurement of the PAR emitted by the lighting fixture at the plant.

What Are The Different Types Of Light Available?

There are several grow lighting options, but they are typically divided into a few different categories.

Ceramic Metal Halide Lights

This option is under the high-intensity discharge umbrella and creates light when an electric current passes through metal halide gas and mercury. It is known for having a high-quality light emission 3-5 times more efficient than incandescent lights. That said, they take a long time to heat up, meaning you won’t have your light immediately, as in the case of options like LEDs.

High-Pressure Sodium Lights

For a long time, HPS systems were the industry standard because they were cheaper, had a higher intensity, and produced a lot of red light.

They also emit a lot of yellow light, which is why they’re widely used for street and security lighting. For many years, HPS lights were preferred by indoor and greenhouse growers because of their large outputs and broad color spectrum.

Incandescent Lights

This is the old-timey option that requires electricity to run through a filament, heating it and producing light. This is the one you can thank Edison and Swan for making.

For anyone reading at home, you probably don’t need an incandescent grow light. There’s still plenty of healthy debate between which lighting is best for indoor growing, but I don’t know of anyone who still thinks incandescent lights are a viable option. And while products under the LED umbrella improve every year, the incandescent light is just flickering into obscurity.

Fluorescent Grow Lights

Fluorescent lighting is an umbrella category over CFLs, linear fluorescent tubes, T5 bulbs, T8 bulbs, T12 bulbs, etc. This versatile lighting option is used in stores, schools, offices – and sometimes indoor gardens. To produce light, electricity enters the fluorescent fixtures through a ballast, feeding into the metal pins on both ends of the fixture. As the electricity flows through the tube, the gasses start reacting and producing light visible to the human eye. Fluorescent lights are cheap to purchase, pretty compact, and more efficient than incandescent bulbs. T5s are specifically known for seed starting.

Also read: 59 AeroGarden Tips and Reviews For Instant Success

LED Grow Lights

LEDs are the up-and-coming stars of the grow light world. They’re practical, energy-efficient, and becoming more affordable by the year. LED lights are made up of two semiconductor materials, one charged positively (protons) and the other negatively (holes) (electrons). When these two particles collide, energy in the form of a photon is emitted. The quantity of energy released determines the color of the light. After that, the light is focused and emitted in a specific direction. LEDs are known for producing a lot of light, specifically full-spectrum light.

Want to see how LEDs compare? Check out our LED Grow Lights Vs. HPS article here.

LED Grow Lights Vs. T5s: An Overview

Okay, now that we’ve given you the basics, let’s dive into these specific options, go through their definitions, lay out their pros and cons, and then compare them. We’ll start with LEDs.

LED Grow Lights

What Is An LED Light?

The term LED refers to a light-emitting diode. LED grow lights are energy-efficient luminaires that produce light for growing plants. LED fixtures function by combining two semiconductor materials. Energy is released as a photon when these two particles collide. The hue of the light depends on how much energy is released. 

There’s a genuine chance that we will all end up using LEDs for all of our lighting needs, indoor growing and otherwise. If we all used LEDs in the United States, it would drop the lighting energy needs by at least 75%.

One of our favorite LED lights right now is from Bestva. You can view it here.

-Two Peas Team

Benefits Of LED Lamp

There are almost too many benefits to count with these indoor grow lights. Even with the higher price tag, LED light sources make the most sense in the long run.

  • they produce less heat than other lighting options
  • most grow light LEDs allow you to customize the amount of light emitted
  • they produce full-spectrum light (light that’s similar in spectrum to natural sunlight)
  • they’re becoming more and more affordable
  • they’re more compact than most growing options
  • they have a significantly longer lifespan than most other options
  • there are sometimes government rebates available for using LEDs over alternatives

In terms of light sources, LEDs are one of the best choices for indoor plants. Here are some of the best options for in-home growers.

Indoor plant guide: Philodendron Gloriosum: The Complete Growers Guide

LED Best Seller List By Value

T5 Grow Lights

What Are T5 Lights?

T5s are a type of fluorescent grow light, meaning they’re composed of a glass tube containing argon and mercury vapor. With this grow light system, metal electrodes are coated with an alkaline earth oxide that emits electrons at both ends.

When the current passes between the electrodes, the gas between them becomes ionized and emits UV light. The inside of the tube is covered with phosphorus, a material that absorbs UV rays and fluoresces. As a result, the energy is released in the form of visible light.

T5s and other fluorescent options are typically less expensive alternatives to LEDs and are cooler and more efficient than incandescent lamps.

What Does T5 Mean?

The letter “T” in T5 refers to the lamp’s shape. The number after the “T” usually denotes the fluorescent tube’s diameter in eighths of an inch. For instance, T5 lights have a diameter of 5/8 inch. A T8 bulb is 8/8″ or one inch in diameter, and a T12 is 12/8″ or 1.5″ in diameter.

The benefit of a T5 is that, while 40% smaller than a T8, it can produce a similar amount of light. And they are typically considered more efficient. So if you go with a T5 option, you’ll have to buy fewer grow lights, and can save costs.

How High Should I Hang My T5 Grow Lights?

Since T5s don’t generate as much heat as other options, some growers think you can place them as close to your seedlings as you’d like. Instead, you should put your lights about 10″ above the plants in most cases, as this optimizes the amount of light received.

T5 Grow Lights: Best Choice

There are many T5 options out there, but here are a few options to get you started.

Benefits Of T5s

  • they produce relatively little heat, especially next to HID or other fluorescent bulbs
  • they Last 10x longer than incandescent bulbs
  • ideal for seedlings and cuttings
  • suitable for a variety of herbs and vegetables
  • good for aquariums

Cons Of T5s

  • In many cases, you will need several types of bulbs to simulate natural sunlight. Blue lights are ideal for vegetative growth, while red lights work better for flowering plants. If you’re willing to invest in the more expensive multi-spectrum T5 bulbs, this can improve your harvests and limit the amount of bulb-changing you need to do
  • less energy-efficient than LEDs
  • the bulbs can be hazardous to human health if broken

Must-read flowering plant guide: Growing Lavender Plants Indoors

Are T5 Lights Good For Growing?

Of the fluorescent lighting options, T5s are my favorite for growing seedlings and small plants. They produce significant light that’s good for vegetative growth, and they don’t generate much heat. They’re also a more affordable option than most LED alternatives.

Do T5 Grow Lights Use A Lot Of Electricity?

Compared to other fluorescent lights, T5 bulbs are more efficient and therefore use less electricity. This is also true for most HID and incandescent light sources.

Differences Between T5 And T8 Bulbs

The main difference between the T5 and T8 Grow Lights is the diameter of the fluorescent tubes. T5s are 5/8″ in diameter, while T8s are 1″ in diameter. Also, T5s are slightly shorter than T8 fluorescent tubes. This is an important note as it means it could be difficult to swap out T5s and T8s on the same fixture. T5 lamps are smaller and more efficient than T8 bulbs.

While T5 lights are the winner between the two, they cost about 2x more than T8 options.

Differences Between T5 and T12 bulbs

T12s are an older generation of fluorescent lighting. They use electromagnetic induction, which is widely considered less efficient than the electronic circuits used in T8s and T5s. Visually, the T12 are 1.5″ in diameter, meaning they’re bigger than T5. In the growing space, smaller is often the better option. These relics of the fluorescent world likely don’t have much use in your indoor garden.

Are LED Lights Better Than T5?

If you read our article on Fluorescents vs. LEDs, you’ll see that we think that LEDs are, as a whole, better than fluorescents options. But if you look at T5s, specifically, it becomes much more interesting. A T5 produces an even light spread, low heat, and gives the grower a decent amount of control. So which option is best depends on the specific situation. Let’s dive into each category, so you can see for yourself if a T5 fluorescent or an LED makes sense for you.

Coolest Option

LED lights produce very little radiant heat (about 11%), but fluorescent lights make a lot more (approximately 30 percent). In other words, LEDs do not emit as much heat as T5 fluorescent grow light bulbs in most circumstances.

That said, of the fluorescent options, T5s are incredibly cool, which is why they’re often used for starting seedlings. They are still a great option in terms of heat production.

Winner: LED

Upfront Costs

Fluorescent lights, including T5s, are usually less expensive than LED lights. Since the early 1990s, however, LED technology has been reducing the gap. When it comes to fluorescent vs. LED lighting, fluorescents are currently the winner. On the other hand, LEDs provide more light at a lower cost over time, making them often cheaper in the long term.

Winner: T5

Most Energy-Efficient

For a long time, T5s were considered the most energy-efficient option for tube lights. But LEDs have closed the gap and are now estimated to save 45-65% in energy compared to their T5 counterparts. And as LEDs continue to improve, T5s are being left in the dust.

In comparison to LED bulbs, fluorescent lights and incandescent bulbs are inefficient. But of the fluorescent option, T5 is still the best option and very efficient.

Winner: LED

LED Efficiency Fun Fact: According to Energy.gov, widespread LED use could save 348 TWh of electricity by 2027. That’s the annual electrical production of 44 1,000-megawatt electric power plants at today’s electricity prices, saving more than $30 billion.

Best Customization

One of the most impressive features of LEDs is their ability to customize your lighting to meet the needs of particular plants. These diodes can be set to emit light at a specific wavelength in the photosynthetic spectrum if desired (visible and non-visible). This means that the quantity of blue or red diodes in your lights can be changed.

The downside of LED customization is that it’s not always clear if your latest lighting change is working. You could get caught up in changing your LED spectrum constantly, trying to find that lighting sweet spot. It can end up being complicated and time-consuming.

With most T5 lighting, you’ll need to swap out red or blue bulbs, depending on the needs of your plants. You can also spring for a full-spectrum T5 light to get more of the colors at once. While there is technically less customization happening with a T5 fixture and lighting, it’s very plug-and-play. It’s a simple option for the grower who doesn’t want to spend loads of time optimizing a spectrum.

Winner: Toss-up

The Safest Choice

While intact, T5 tubes are entirely safe. But if you break a bulb, it could potentially be hazardous. Fluorescent tubes, including T5s bulbs, have a little bit of mercury gas in them. This gas is toxic to humans and can adversely affect our kidneys, lungs, and nervous system.

On the other hand, LEDs do not contain mercury, so they are a safer option. There is some (mostly unwarranted) concern that LEDs are harmful to the human eye, specifically the blue light produced. While staring directly at the light for long periods could cause damage to your retinas, it shouldn’t be a concern for most growers.

Winner: LED

Best Spectrum For Plant Growth

Plants require full-spectrum light to thrive, and this is available with LEDs. This, however, is not always the case with a single fluorescent light, which is traditionally warmer or cooler. Plants really need both, especially in different stages of growth.

That’s not to say that T5s aren’t inherently ineffective in the spectrum space. Several growers prefer this option for smaller plants and seed starting.

Also read: 11 Tips For Growing Marble Queen Pothos

And indoor gardeners have long used a two-tube fluorescent fixture with one cold and one warm bulb or a full-spectrum fluorescent tube that emits warm and cool light to counteract this impact.

Winner: Toss-up

Which Option Lasts Longer?

The average LED bulb has a lifespan between 10k and 50k hours, making it a better option than either T5s, HIDs, or incandescent lights. A good fluorescent T5 grow light can be expected to last 20,000 hours.

Winner: LED

Are T5 Tubes Being Phased Out?

Have no fear – T5 fluorescent tubes are still being produced. That said, because switching to LED lights can lower energy costs while maintaining relative efficiency, it’s not a stretch to think that T5s and other fluorescents could one day be removed from shelves. The UK government, for instance, is planning to remove fluorescent lights from stores in September 2023 to combat climate change.

Can You Replace A T5 With An LED Grow Light?

You can simply switch your T5 fluorescents with LED tubes that are designed to work in the same system. Doing this can cut your energy prices by as much as 50%.

Do You Need A Grow Room?

Grow tents are a good option for controlling variables, including light, water, temperature, and humidity. With the reflective material, grow tents can help you maximize the efficiency of your grow lights, as well. While not necessary for everyone, grow rooms or grow tents make an excellent option for indoor growers.

T5 vs. LED Grow Lights: Conclusion

There are so many light bulbs and fixtures to choose from in the indoor grower space. Two of the best options are LED grow lights and T5 fluorescents. While LEDs are better in the long term, T5s are a more affordable option (upfront) that’s great for most growing needs. Get started with your indoor garden and purchase a grow light today.

If you need help hanging a new set of artificial lights, and happen to live in the Chicago area like us, consider calling Fix It People to take care of it for you!

HID vs. LED Grow Lights: What’s the Difference?

Whether you’re a seasoned indoor grower or just getting started, you’ve probably heard about the battle between LED and HID grow lights. It’s a typical point of questioning among indoor gardeners who want to ensure that they get the best light for energy savings, higher yields, and healthy plants and flowers.

The numerous aspects of these grow lights include light intensity, light penetration, yield potential, energy efficiency, overall pricing, and upfront cost. By the end of this article, you’ll better understand the many options and know which type of light is best for you.

It’s also okay if you don’t want to go into too much detail about it. We will include a basic explanation of which choice we recommend in the majority of instances.

Before Reading Further

The discussion about HID and LED lighting is still raging, and both sides have valid arguments. We’ll try to sort through some of the facts presented by both sides in this post and offer you the tools you need to choose the best lights and increase the productivity of your indoor garden. We’ll update this article if and when further data or technology becomes available.

Help us grow! This post contains affiliate links, which means we receive a commission if you click a link and purchase something recommended. All opinions, however, are our own, and we do not accept payments for positive reviews.

HID vs. LED Grow Lights: What’s the Difference?

The contemporary LED grow light is usually the more accessible option for most indoor growers than HIDs are. Plants benefit from the uniform distribution of red, blue, and green light emitted by LEDs (similar to natural sunlight). It can also produce larger plant yields while using less electricity and requiring fewer additional costs.

While HID bulbs are typically less expensive upfront, when you include the cost of the fixture, additional cooling charges, and ventilation, LEDs are the ideal option for beginners and the most cost-effective option over time.

There are a few outliers, and you may still find high-quality lights in the HID fixture camp–– many pros swear by them. However, in terms of performance and cost savings, an LED system is usually the best entry-level alternative.

Based on a study done by MIGRO in 2021, here are some of the top compact-LED grow lights on the market in terms of PAR light output per watt.

best-small-led-grow-lights-efficiency-chart

Of the options listed above, most are available on Amazon, so we’ve included a comparison chart below:

The Best Small LED Grow Light

Unfortunately, MIGRO doesn’t sell on Amazon. But you can purchase from them on their site.

Grow Light Color Spectrums

We all know that plants need light to thrive, but have you ever considered how the hue of light influences plant growth?

The sun produces the whole visible light spectrum, including red, orange, yellow, green, blue, indigo, and violet: the full-spectrum or white light. Most indoor plants flourish in full-spectrum bulbs, which produce a balance of cool and warm brightness that simulates (or at least tries to mirror) the sun. Seedlings, houseplants, culinary herbs, and several other plants thrive in them.

Blue light, in general, promotes the development of leaves and stems. Red light promotes flower development, making it crucial for fruit-bearing plants. However, there’s plenty of information available on the unique advantages of red and blue lights–– though some of it’s confusing.

A good video on frequent misunderstandings about the color spectrum, notably red and blue light, can be found below:

https://www.youtube.com/watch?v=NMVP7Nvew0A

PAR vs. Lumens

While it may seem self-evident, it’s easy to overlook the fact that plants and humans receive light in quite different ways. Humans use photopic vision to sense color. Photosynthetic active radiation (PAR) is the light wavelengths that drive photosynthesis in plants. Here’s a helpful article on the differences between PAR and lumens.

PAR refers to the wavelengths of light that encourage plant growth (Photosynthetic Active Radiation). We utilize Photosynthetic Photon Flux (PPF) to calculate the amount of PAR produced by a system per second. PPF does not indicate how much of the measured light reaches the plants, but it’s essential to know if you want to determine how efficiently a lighting system produces PAR.

The Photosynthetic Photon Flux Density is used to measure the quantity of PAR that travels from your fixture to your plants (PPFD). PPFD is a measurement of the PAR emitted by the lighting fixture at the plant.

To add to the challenge, you’ll need to average many PPFD readings taken over time since grow lights are usually most potent in the center, with light decreasing as you move away from the center. A grow light manufacturer may (and probably will) only supply the PPFD from the central space. “To ensure you are getting actual PPFD values over a specific growing region, the manufacturer must disclose the following: measurement distance from the light source (vertical and horizontal), number of measurements included in the average, and the min/max ratio” according to a Fluence post.

Grow Light Intensity

PPF (Photosynthetic Photon Flux) refers to the total amount of light produced per second by an LED, HID, or other light sources. We refer to as the intensity of the grow light unit of measurement as micromoles per second (umol/s).

Light intensity refers to the power or amount of light generated by a specific lighting source. It’s a wavelength-weighted power measurement for light sources. The lighting source determines the light intensity, and there are high and low light intensity fixtures, lamps, and bulbs available.

Different light intensities serve other functions when it comes to indoor gardening. Young plants, for example, require less light than vegetative and blooming plants.

What are HID Grow Lights?

While HID technology is older than LEDs, it produces more and brighter light. HIDs are also available in double-ended versions, making more light and taking up less space than single-ended lights. Growers commonly use HIDs in large commercial greenhouses.

HIDs can only produce one color, unlike LEDs, which may change color based on the diodes used. The type of gas used determines the light spectrum produced by a bulb. You must physically adjust the bulb to transition from a vegetative or full-spectrum light to a bloom arrangement.

High-Intensity Discharge (HID)

HID is the abbreviation for High Intensity Discharge lights. Inside HID bulbs are gas-filled tubes with electrodes on both ends. Electricity jumps from one electrode to the next, causing the gas to react and produce light.

HID grow lights are also available in a variety of styles. The two most prevalent types are metal halide (MH) and high pressure sodium light (HPS). Growers combine MH and HPS lamps and bulbs to achieve the spectrum required for each growth stage.

Metal Halide lights emit a blueish spectrum of light that’s ideal for the vegetative stage. Ceramic Metal Halide lights, a subtype of MH lights, provide a broad range that better mimics natural sunshine than any other type of grow light. Because of their yellowish-orange color, high-pressure sodium lights are suitable for blooming plants and acceptable for vegetative plants.

What are LED Grow Lights?

More than a century ago, Henry Josef Round invented the first light emitting diode (LED). However, innovators only first used red LEDs in commercial electronic devices such as TV signal lights and remote controls in the 1960s.

Since the 1990s, LEDs have evolved significantly, now considered as potential alternatives to traditional greenhouse lighting sources. It wasn’t until recently that researchers could increase the emission power of LEDs and make them emit white light (full-spectrum light).

Traditional incandescent lamps use more energy and produce far more heat than this new LED type. LEDs are likewise built entirely of solid parts and can be made relatively compact. They may also be modified in many situations, allowing you to emit any color of visible light on the spectrum. You can alter the range to better match the needs of your plants.

Light-Emitting Diodes (LED)

LED stands for light-emitting diode. LED grow lights are energy-efficient luminaires that produce light for growing plants. These lights combine two semiconductor materials: one charged positively (protons) and one charged negatively (electrons). When protons and electrons collide, the energy projects as a photon that determines the light’s hue. The light is then focused and emitted in a precise direction.

Here’s a quick demonstration of how LED lighting works:

HID vs. LED Grow Lights: Which is the Best?

Choosing the best type of light isn’t as easy as you may assume. Each type of light has its advantages and drawbacks. Let’s look at some of the critical distinctions between HID and LED grow lights. Hopefully, this information will help you determine which option is the ideal fit for your requirements.

HID Grow Lights: Pros & Cons

Pros: 

History

Since HID lights have been the industry standard for so many decades, there is widely available expertise to match usage. There is little we can’t know about HIDs (if anything at all).

Lower Up-Front Cost

Another benefit of ubiquity is affordability. HIDs have been innovated and improved since their invention, so cost efficiency is at an all-time high. The components are simple enough to be cheap.

Higher Wattage

HID lights tend to have more concentrated power and a subsequent higher wattage per bulb. If you prefer power over precision, HID might be the way to go.

Full Plant Light Spectrum

An HID light supplies all the light you need, all at once. They’re not particularly heavy on red, blue, or yellow light but strike a balance regardless of your plants’ growth stage.

Higher Temperatures

With all the power HIDs offer, a high temperature follows closely. A lot of heat can be great for a large grow room that thrives on heat-fueled humidity or for plants from the desert. 

Better Coverage for Large Spaces

HID plant lights cover lots of space quickly. Large growing areas need relatively fewer HID bulbs because of their broad coverage.

Canopy Penetration & Full Nourishment

Power is the name of the game for HIDs, not only in light and heat but also in feeding your plants. The bright, broad spectrum of light will rip through the densest canopies for deep nourishment.

Larger Yields

Generally speaking, more is more. With all the juice an HID can offer, harvests are bound to reap the benefits. 

Simpler Pruning Process

Because the light from HIDs hits a plant more generally, you shouldn’t need to prune your gardens to optimize nourishment. No matter where they’re growing, if an HID is nearby, the plants will eat.

Better Consistency

They’re not sexy, but they get results. With fewer options for customization, you can be more consistently aware of what to expect each harvest season.

More Standardization

Since HIDs have been around longer and have a history of regulation by farmers, you can be pretty sure of the quality no matter what brand or variety you choose.  

Reliability

Although they require some upkeep and adaptability, HID grow-lights are far from fussy. The components themselves are not too complicated: a big, strong light bulb. You can count on HIDs to get the job done.

Customizability

The lights themselves may not have many variables, but an HID grow operation is far more than the bulbs, creating space for a lot of customization. From reflectors to cooling systems, stands, and aeration, you can fine-tune every part of your garden.

Repairability

As with much older light technology, there aren’t many intricate pieces too tough to figure out. If one part breaks, you can just as easily replace it. If one bulb pops, you’ve still got 90% of the system in working order.

Cons:

Expensive to Run

Among their main drawbacks, HID light systems lose affordability as time goes on. They require numerous pieces to complete the set, need periodic repairs, and need counteractive measures to offset their heat output.

Poor Energy-Efficiency

HID lights and lamps use a lot of energy; your wallet will feel it, and likely mother nature will too. You also need to consider air conditioning accommodation to regulate temperature, adding to the energy output.

Complexity

The science behind HIDs is simple, though the setup can get complicated. The lights aren’t exact, so they will likely require additional equipment and attention to optimize growth.

Requires More Equipment

From reflectors to cooling systems, a grow tent, stands, and aeration, you can fine-tune every part of your garden. However, more pieces can mean more problems.

Higher-Maintenance

HID lights are typically not a “set-it-and-forget-it” system. Throughout the growing process and different times of the year, lights will need to be adjusted, reflectors rearranged, and air conditioning increased.

Dim & Burn-Out More Quickly

Remember how quickly those old-school Edison bulbs can burn out? While not as bad, the technology is similar. Burning halogen bulbs just don’t last like modern fluorescents. But they might be prettier!

Long-Term Decay

Along with the bulbs, each piece will suffer from decay. Aluminum reflectors will dull over time, and cooling systems won’t last forever. As parts need to be adjusted, breakage is inevitable.

Environmentally Unsustainable Parts

The widespread use of traditional forms of lighting like HIDs has a significant detrimental impact on the environment, including our air, water, and soil. HID fixtures are among the most environmentally destructive lighting systems due to their power generation and disposal requirements for toxic metal components.

Light Spectrum – Imprecise Vegetative/Bloom Spectrums

HIDs will give a plant all the kinds of light it could ever need, all at once. That might sound great, but plants need different spectrums in different phases. Vegetative growth needs more blue light, whereas the blooming and flowering stage needs more red light (broadly speaking).

Fire Risk

HID lights get hot! So much power turns to heat quickly. Be cautious of fire risks, especially with dry plants. A strict watering schedule is imperative.

Risk of Plant Burns

Your garden might not catch on fire, but the intense light and heat from an HID setup can scorch delicate leaves and petals on whatever you’re growing. Make sure to regulate temperatures, water plants appropriately, and space the lights sufficiently.

Unideal for Small SetUps

If you just want some fresh basil for cooking, HIDs are way overkill. Unless you’re looking to start indoor urban farming, you can likely do without the high-powered HID system.

Height Limitation

HIDs can’t get too close to plants, or they’ll burn them up. So if you’re in a tight spot or your plants grow to the ceiling, you’ll likely have to find another light source for those final stages of growth.

LED Grow Lights: Pros & Cons

Pros: 

Precise Light Spectrum

LED grow lights contain several small bulbs, each of which can highlight an aspect of the light spectrum. No matter which grow cycle your plant is in, there’s an LED to feed it.

 

Energy Efficiency

If you’re looking to reduce your environmental impact (as you should be!), LEDs are a small but significant step. These lights can get bright without trying too hard.

 

PAR-Per-Watt Value

Energy efficiency benefits your wallet, too. Your energy bill shouldn’t increase much, and you won’t have to worry about offsetting an over productive system.

 

Bloom & Vegetation Modes

Many LED lights allow you to focus red light for blooming or blue light for vegetation, all in the same system. You can also shine a balance of the two, depending on your plants’ needs.

 

No Toxic Metals

Older light bulbs often use toxic or non-recyclable metals, but LEDs do not! You won’t have to worry about special disposal instructions should your lights ever stop working.

 

Long-Lasting Fixtures (Up to 100,000 Hours)

Some LED lights can last the equivalent of 11 years if left on all day, every day. That’s about 20 years of usage for regular growing schedules.

 

Lower-Maintenance – Durability

LEDs don’t break very often, and even if they do, they operate so that one damaged piece won’t render the rest obsolete. 

 

Sufficient for Any Size Set-Up

I’ve used one LED grow light for a tiny basil plant. I’ve used six lights for a complete indoor garden. No matter the size, LEDs can get the job done.

 

Great for Confined Spaces

If you’re growing in a tiny space or only want a small garden, LEDs can come in compact sizes to fit your unique needs. Don’t worry about your grow lights becoming the focal point of your home.

 

Heat & Fire Safety

LEDs give off comparatively less heat and pose a little-to-no threat of fire or overheating. Little heat and a lower temperature means you can leave these lights on safely for hours or days on end.

 

Various Form Factors – High Bay, Linear, etc.

When we say ‘LED,’ we could be referring to several shapes and sizes. Some look similar to hanging industrial lights, while others are sleek and cylindrical. You can even buy them as individual bulbs, allowing you to customize them almost endlessly.

 

Long-Term Affordability

LEDs may be a bit pricier upfront, but over time they are very cost-effective. Durability mixed with energy efficiency along with not needing much extra equipment allows for minimal upkeep costs.

 

Minimal Cooling Needs

One of those unnecessary upkeep costs is supplemental cooling. LEDs don’t give off much heat if you can even notice it at all. You shouldn’t have to think about keeping the AC running or circulating air through your garden using an LED.

 

Ease of Use

Most LED lights are an all-in-one package, meaning all you have to do is hang it up and press a button. Many are even automated to match your lighting needs based on timing and spectrum control.

 

Supplemental Light

Since LEDs can be a gentle form of artificial light when used sparingly, they can be a great option if you just need a little more light for your plants. Maybe your windowsill gets plenty of sunlight, but winter months are coming, so you could use a couple of extra hours of sun.

Cons:

 

Learning Curve – Not as Much Current History

LEDs are a relatively recent technology, so the literature isn’t as robust as other, older lighting systems. You may find that some experimentation is necessary to fine-tune your process.

 

Up-Front Cost

If you’re looking for the cheapest upfront option, an LED fixture might not be for you–– they can get pretty fancy, and the efficient technology comes at a cost.

 

Overwhelming Options

It seems like ‘LED’ is an overused descriptor for most lights these days, so it can be challenging to know which is appropriate for a garden. Even still, once you narrow it down, the specifications are countless. 

 

Variability

Since more and more producers are selling LEDs nowadays, quality can vary significantly. You might not always know how good of a purchase you’ve made until you test it out.

 

Light Spectrum

Some growers complain that LEDs don’t offer a broad enough light spectrum or focus too heavily on the blue and red ends. You’ll have to do some research to ensure your fixture is providing all the needed light.

 

Light Penetration

LEDs can be a bit more gentle than more traditional lighting methods, which may reduce the amount of light getting through to the base of your plants. The softer light might require multiple lights set from different angles.

 

Blue Light

LED lights tend to be blue/purple light heavy. However, some gardeners (and scientists) doubt the extent to which blue light is ideal for a plant. Many would suggest that a full-spectrum white light works just as well, if not better.

 

Height Limitation

Your LED lamp will need to remain close to the plants to absorb the nutrients they need. But if the light is too near the plant, it could damage the plants. Since plants are constantly growing toward a light source, you’ll need to adjust the light to be close but not touching.

 

Risk of Light Burn

If the LED light gets too close to a plant, it can burn the leaves and flowers. Even though LEDs are a more gentle light source, you’ll need to monitor their distance from the garden.

 

Advanced Pruning Techniques

Since you’ll likely need to position several LEDs around your garden to ensure sufficient nutrition, you may have plants growing in various directions. Varied growth directions will require some creative pruning to ensure each part receives enough light, especially considering how tough it can be to penetrate the canopy.

When to Use HID Grow Lights

You Want Better Light Penetration.

If you’re growing something super dense and hardy, and a lot of it, nothing quite beats the old-school HID grow-lights. Just blast it with heat and power and watch the yield multiply!

 

Upfront Costs are Prohibitive.

If you want to start gardening right away but don’t have the cash for a sophisticated setup, an HID bulb may be the best choice. You can DIY reflective and cooling systems for a budget-friendly hack. 

 

You Don’t Mind Changing Bulbs.

We listed changing the light bulbs as a downside above, but is changing a bulb all that difficult? If you like the full-spectrum option and don’t mind tweaking the set up a few times a year, there’s no reason to fear the HID.

 

You Want a Full Spectrum.

Some people swear by full-spectrum, full-time. Have you ever seen blue sunlight? It may be old-fashioned, but bright white light gets the job done.

 

Maximum Yield is a Must.

HIDs are like diesel trucks: what they lack in finesse, they make up for in power. Some plants don’t need anything more than as much food as possible, and an HID setup won’t disappoint. Massive yields are almost guaranteed.

When to Use LED Grow Lights:

 

Energy Efficiency is Important To You.

If HIDs are diesel trucks, LEDs are electric sedans. If environmental sustainability is front of mind (as it should be), an LED is the only option. Environmental consciousness might be the deal-breaker.

 

You Can Afford to Invest More.

If you’ve got a little extra cash to throw at your garden, go for an LED setup. Over time, the cost will even out anyway.

 

Adjusting Lights Isn’t a Big Deal.

We listed adjusting the light as a downside above, but is moving a lamp all that difficult? If you like the customization options and don’t mind tweaking the set up a few times a year, there’s no reason to fear the LED.

 

You Want to Experiment with Light Spectrums.

Maybe nature doesn’t grow a well as we do. Sometimes plants need just blue light, and sometimes they need just red. Other times they need everything they can get. LEDs are the simplest way to satisfy needy plants.

 

You Want to Start Right Away.

Once you’ve got your LED light, you’ve got everything you need. No reflectors or HVAC is required. You can start growing right now!

Consider Using LED & HID Grow Lights

Professional growers most commonly use HID lights. LED grow lights, on the other hand, continue to have a sizable market. Indeed, combining the two can help you enjoy the best of both worlds. LEDs are a great addition to regular HID fixtures as a great way to brighten up the room. They’ll assist in bringing extra light into your environment, particularly when used as under canopy lighting.

HID Grow Lights

 

MH/HPS

Metal Halide (MH) and High-Pressure Sodium (HPS) are the two most common types of HID lamps available today. Metal Halide MH bulbs provide a blueish spectrum of light, ideal for usage during the vegetative stage of a plant’s life cycle. High-pressure sodium HPS bulbs produce a yellow-gold tint that is ideal for flowering but can also aid in the vegetative stage.

 

CMH 

The ceramic metal halide lamps, which come under the HID umbrella, are worth noting. They create blue-spectrum lights that are ideal for vegetative growth. Overall, the spectrum of light produced by CMH is reasonably close to that of LEDs. Ceramic Metal Halide (CMH) grow lights are a subcategory of Metal Halides. Likewise, high-intensity discharge (HID) lights employ one or two special CMH bulbs, each rated at 315 watts. These lights produce an astonishing spectrum of light that more closely resembles natural sunshine than any other light we’ve discovered.

 

Double-Ended

Without a doubt, double-ended grow lights are the go-to choice for commercial growers. The light released is more robust and evenly dispersed. DE lights emit up to 30% more powerful light than single-ended lights, but the spectrum is also more optimal. They emit a more significant amount of infrared and ultraviolet light, too.

The Best HID Grow Lights

How to Choose an HID

Beginner

A full-spectrum kit with a built-in reflector hood will be more than sufficient if you’re just starting. It should run you right around $100.00. Start with something simple like herbs or an indoor tomato plant, leaving the light on for 12 to 16 hours daily.

 

Intermediate

For seasoned professionals, the next level is customization: multiple kits, growing stands, different bulbs for various growth phases, and a full reflective enclosure. You’ll be a self-sufficient farmer in no time.

 

Expert

The only way up from here is to integrate LED lights into the setup. You read that right: expert HID growers are also using LEDs! The spectrum variability, light intensity, and low temperatures are perfect companions to the HID workhorse.

LED Grow Lights

 

White Light Full Spectrum

All-white light contains light at all wavelengths, making it a true full-spectrum light. Unless they also include white diodes, “purple” LEDs typically only emit light at specific wavelengths. Full-spectrum white light spans the light spectrum from infrared to near-ultraviolet, or all wavelengths benefitting the plant. In particular, sunlight is considered full spectrum, so a lamp that can mimic the sun is a great option.

 

Mixed Spectrum

There is an even better blend of hues than the all-white spectrum: an all-white range featuring red and blue diodes, as well as UV and IR. Diverse spectrum LEDs contain around 25% Red and Blue Diodes and full spectrum 6500k White Diodes. The afternoon sun’s visual effect is a natural glowing form of light that brings out the color in your garden and feeds its hunger.

The Best LED Grow Lights

What works well for one individual might not work well for another. As a result, we’ve compiled a list of the top LED grow lights on the market, organized by use and price.

 

For this comparison, we used MIGRO data. If there’s any doubt about MIGRO’s objectivity, given that they market their systems, we might remember that their products are ranked 4th for best value by PAR production per dollar and 2nd for best value after three years.

 

Before taxes and shipping, the figure below compares the cost of the light to the PAR output (mols/sec useable PPF) split per dollar.

best-value-led-grow-light-PAR-output-chart

How to Choose an LED

 

Beginner

 

If you’re just starting, one full-spectrum light will be more than sufficient. It can be as cheap as $25.00 for a simple setup. Start with something easy like herbs, leaving the light on for 12 to 16 hours daily.

 

Intermediate

 

For seasoned professionals, the next level is customization: Blue and red lights, complete spectrum kits, automated timers, and adjustable stands. The options are almost limitless. You’ll be a self-sufficient farmer in no time.

 

Expert

 

The only way up from here is to integrate HID lights into the setup. You read that right: expert LED growers are also using HIDs! The blast of power, heat, and full-spectrum lighting is a perfect companion to the LED acrobat. 

 

Conclusion

 

Even though comparing the two is complex, LED lights have improved and gotten more economical over time. However, HID fixtures have remained around the same in terms of efficiency and quality. Regardless, both varieties are more than capable of producing a bountiful garden. Using the two together is easily the most obvious choice for high yields. With that said, while HID lamps are still widely utilized in many commercial growth systems, they will most certainly be phased out in the following years by more cost-effective LED alternatives. It seems inevitable that LEDs will soon be able to do everything an HID can do, but more and better. In the meantime, for most indoor hobby growers, the humble-yet-skillful LED is the most sensible choice, and your plants will be better for it.

If you need help hanging a new set of artificial lights, and happen to live in the Chicago area like us, consider calling Fix It People to take care of it for you!

LED Vs. Fluorescent Grow Lights: What’s Right For Your Growing Needs?

When growing plants indoors – either commercially or just in an indoor garden or grow room – you need to have the right type of light to meet your growing needs. Regularly, growers decide between a few different lighting options, such as LEDs, fluorescent lights, metal halide options, or high-pressure sodium grow lights. Today we’ll be discussing LEDs vs. fluorescent grow lights, which is a common question for growers. There are many options out there, and you’ll typically find some pretty conflicting information on which option is best.

In this article, we’re going through the definitions of LED bulbs and fluorescent bulbs, walk you through some of the best grow lights in each category and then finish off with our take on the best type of grow light for your needs. In the battle between LED and fluorescent lighting, we have the information you need to get started!

Read More: LED Grow Lights Vs. HPS

Considerations When Choosing A Grow Light

When it comes to grow lights, there are three main factors to consider: the color of the light, the energy cost of the fixtures, and the intensity of the light. Let’s start by knowing the needs of your plants before we look at the LED vs. fluorescent lights.

The Light’s Color

We all know that plants need light to thrive, but have you ever considered how the hue of light influences plant growth?

The sun produces the full visible light spectrum, including red, orange, yellow, green, blue, indigo, and violet. This is referred to as full-spectrum or white light.

Most indoor plants flourish in full-spectrum bulbs, which produce a balance of cool and warm light that simulates (or at least tries to mirror) the sun. Seedlings, houseplants, culinary herbs, and a variety of other plants thrive in this full-spectrum light.

Blue light, in general, promotes the development of leaves and stems. Red light promotes flower development, making it crucial for fruit-bearing plants. However, there is a wealth of information available on the unique advantages of red and blue lights. Some of it is also deceptive.

A good video on frequent misunderstandings about the color spectrum, notably red and blue light, may be found here:

https://www.youtube.com/watch?v=NMVP7Nvew0A

Par vs. Lumens

It’s easy to overlook the fact that plants and humans receive light in quite different ways. Humans use photopic vision to sense color. Photosynthetic active radiation (PAR) is the light wavelengths that drive photosynthesis in plants. An excellent article on the differences between PAR and lumens can be found here.

PPF (Photosynthetic Photon Flux) refers to the total amount of light produced per second by an LED, fluorescent, or other light sources. This is what we refer to as the intensity of the grow light. The unit of measurement is micromoles per second (umol/s).

What is the PAR value of the light?

The wavelengths of light that stimulate photosynthesis in plants are PAR (photosynthetic active radiation). We utilize Photosynthetic Photon Flux to calculate the amount of PAR produced by a system per second (PPF). PPF does not indicate how much of the measured light reaches the plants, but it is essential to know if you want to determine how efficient a lighting system produces PAR.

What Percentage of PAR Does Your Plant Get?

The photosynthetic photon flux density is used to measure the quantity of instantaneous PAR that travels from your fixture to your plants (PPFD). This is a measurement of the PAR emitted by the lighting fixture at the plant.

Intensity on the Whole

Light intensity refers to the power or amount of light generated by a specific lighting source. It is a wavelength-weighted power measurement of a light source.

The lighting source determines the light intensity, and there are high and low light intensity fixtures, lamps, light bars, and bulbs available.

Different light intensities serve other functions when it comes to indoor gardening. Young plants, for example, require less light than vegetative and blooming plants.

What Is An LED Light?

LED stands for “light-emitting diodes” and is one of the main types of grow lights on the market. LED grow lights are energy-efficient luminaires that produce artificial light for growing plants. LED fixtures work by combining two semiconductor materials: one charged positively (protons) and one charged negatively (electrons). When these two particles collide, energy is released in the form of a photon. The hue of the light is determined by the amount of energy released. The light is then focused and emitted in a precise direction.

Here’s a quick demonstration of how LED lighting works:

Previously, LEDs have been considered costly alternatives to other grow lights, but since the 1990s, they’ve evolved significantly and are increasingly considered potential alternatives to traditional greenhouse lighting sources.

That said, it wasn’t until recently that researchers could increase the emission power of LEDs and make them emit white light (full-spectrum light).

Traditional incandescent, fluorescent, or HPS lamps use more energy and produce far more heat than this new LED type. LEDs are likewise built entirely of solid parts and can be made relatively tiny for compact growing.

They may also be modified in many situations, allowing you to emit any color of visible light on the spectrum. You can alter the spectrum with this smart lighting to better match the needs of your plants.

Benefits Of LED Grow Lights

  • Longer lifespan than most lighting options
  • Produces less heat
  • Uses less energy
  • Emits full-spectrum light
  • More compact growing options
  • Typically easy to customize
  • Becoming more affordable each year
  • State and federal rebates available in some situations

Cons Of LED Grow Lights

  • More expensive upfront than a lot of lights
  • The blue light generated can harm your retinas
  • Light burn on plant leaves is a potential risk with this type of indoor lighting

What Are The Best LED Grow Lights?

What works well for one grower might not work well for another. As a result, we’ve compiled a list of the top LED grow lights on the market, organized by use and price.

For this comparison, we used MIGRO data. If there’s any doubt about MIGRO’s objectivity, given that they market their own systems, we might remember that their own products are ranked 4th for best value by PAR production per dollar and 2nd for best value after three years.

Before taxes and shipping, the figure below compares the cost of the light to the PAR output (mols/sec useable PPF) split per dollar.

best-value-led-grow-light-PAR-output-chart

Here’s a comparison price of the products available on Amazon.

Three-Year Cost

The figure below shows the initial cost of the LED fixture versus the cost of running it with electricity for three years at 750mols/m2/sec. What’s notable about this graph is that several of the more expensive units, many of which were ranked lower in the previous chart, gain ground in this comparison. The operating expenses of higher-quality and more efficient fixtures are often cheaper, bridging the gap with some of these initially more affordable solutions.

best-value-led-grow-light-3-year-total-cost

What Is An LED Lamp: An LED lamp consists of an LED mounted on a heat sink, with a power supply and directional lenses.

What Is A Fluorescent Light?

A fluorescent light or fluorescent lamp creates light through the fluorescence of a phosphor coating. It is a cooler and more efficient option than incandescent lamps and is more affordable than LEDs.

A fluorescent lamp is made out of a glass tube that is filled with argon and mercury vapor. At each end, metal electrodes are covered with an alkaline earth oxide that emits electrons. The gas between the electrodes is ionized and emits UV light when the current travels across it. Phosphors, chemicals that absorb UV radiation and fluoresce, are coated on the inside of the tube. As this happens, the energy is released as visible light.

Two Types Of Fluorescent Lights

Typically, fluorescent grow lights are divided into fluorescent tubes and compact fluorescent lights (also known as CFL).

CFL grow lights are different from conventional CFLs in that they are larger, have higher wattages, and emit a wider spectrum of light. Fluorescent tube grow lights are available in various sizes and types. Still, the T5 diameter high-output (HO) grow lights, which provide roughly twice as much light as conventional fluorescent tubes, are typically considered the best to use. Built-in reflectors and ballasts are common in fluorescent grow light fixtures, giving them a slim profile.

Best Fluorescent Grow Lights

In the fluorescent category, there are two primary types of lights: t5 grow lights and CFL lights.

Of the t5 grow lights, here are some of our favorite options for this year:

Benefits Of A Fluorescent Light

  • Affordable – They are more affordable than incandescent bulbs and LEDs
  • Efficient – While not as efficient as LEDs, they are much more efficient than HID (about 50% less energy), meaning you are using less power and saving more money than other options
  • Great for seed starting – one of the primary uses for t5 fluorescent lights is seed starting
  • Customizable – There are many fluorescent lights with different hues, whether you’re looking for vegetative growth or flower production. While it’s not as easy to customize these lights as it is for LEDs, it’s still a straightforward option.

Cons Of A Fluorescent Light

  • They don’t last as long as LEDs
  • If broken, the mercury inside can cause serious health hazards
  • They don’t typically last as long as LEDs
  • They aren’t as energy efficient as LEDs

When Should You Use A Fluorescent Grow Light?

Fluorescent lights are great for plants that require low to medium amounts of light, such as sansevieria and golden pothos. They are also commonly used to start vegetables from seed indoors. Long, tube-like bulbs in various diameters, including T5, T8, and T12, are widely used in these lights.

Can You Use Regular Fluorescent Lights To Grow Plants?

While it may seem like an easy fix, most standard lighting will not work well for indoor plants. Normal indoor illumination has minimal effect on photosynthesis, but fluorescent lighting put close to the tops of the plants can aid in this vital plant function. The best option is to purchase a grow light designed explicitly for maximizing photosynthesis.

LED Vs. Fluorescent Grow Lights: Comparison

Coolest Option

LED lights emit very little radiant heat (about 11 percent), whereas fluorescent lights produce greater radiant heat (approximately 30 percent). In other words, in most cases, LEDs do not produce as much heat as fluorescent grow light bulbs.

Having said that, there are various conditions in which indoor gardeners might desire their lights to generate heat.

If you’re growing a plant that requires a higher leaf surface temperature, consider radiant heat while selecting a light source. In that case, a fluorescent lamp may be a viable solution. However, if heat is a top priority, an HPS or other HID lighting fixture may be the best option.

Winner: LED

Most Affordable Upfront

Fluorescent lights are often less expensive to purchase than LED lights. LED technology, on the other hand, has been closing the gap since the early 1990s. When it comes to fluorescent vs. LED, fluorescents win for now. But in the long run, LEDs produce more light at a more efficient price, meaning they’re often cheaper in the long run.

Winner: Fluorescents

Most Energy Efficient

Fluorescent lights and incandescent bulbs are inefficient compared to LED bulbs. 

When first introduced, CFLs were praised for their 25 percent to 35 percent energy savings over incandescent bulbs.

But once again, LEDs have raised the stakes. When comparing CFL and LED bulbs, LEDs with an ENERGY STAR® rating use 75% less energy. 

Fun Fact About LED Efficiency: According to Energy.gov, widespread usage of LEDs could save around 348 TWh of electricity by 2027. At today’s electricity pricing, that’s the annual electrical production of 44 1,000-megawatt electric power plants, representing a savings of more than $30 billion.

Winner: LED

Easiest To Customize

One of the most remarkable aspects of LEDs is how easy it is to tailor the light for individual plant requirements. These diodes can be programmed to emit light at a particular wavelength in the photosynthetic spectrum (visible and non-visible). This means you may adjust the number of blue or red diodes in your lights.

In most situations, you are not able to customize fluorescent lights – at least not easily. The reason for this is that the process of creating a fluorescent lamp is a chemical one. Once the system is set in place, changing it can be tricky. That’s not to say that there isn’t variety in fluorescent light, but customizing that light – at least to the extent that LEDs can be customized – is not typically an option.

Winner: LED

Safest Option

While intact, fluorescent tubes are entirely safe. But if you break a bulb in this lighting system, there is some opportunity for danger. Fluorescent tubes, including CFL bulbs, have a little bit of mercury gas in them. This gas is toxic to humans and can adversely affect our kidneys, lungs, and nervous system.

If you break a fluorescent grow light, start by removing all pets and people from the room. Open a window and turn off any heating or air-conditioning system so that the toxic material isn’t distributed throughout your home. You need to let the room with the broken bulb air out for at least 10 minutes (but preferably several hours) before you return to clean up. For the complete list of instructions on what to do if a fluorescent bulb breaks, start with the EPA guidelines.

On the other hand, LEDs do not contain mercury, so they are a safer option in that regard. There is some (mostly unwarranted) concern that LEDs are harmful to the human eye, specifically the blue light produced. While staring directly at the light for long periods could cause damage to your retinas, it shouldn’t be a concern for most growers.

Winner: LED

Best Color For Plant Growth

Plants require full-spectrum light to thrive, and this is available with LEDs. This, however, is not always the case with a single fluorescent light, which is traditionally one or the other. If you just use cool light, your plants will grow tall and spindly, whereas if you only use warm light, your plants could grow short and bushy with no blossoms. 

Indoor gardeners have long used a two-tube fluorescent fixture with one cold and one warm bulb or a full-spectrum fluorescent tube that emits warm and cool light to counteract this impact. 

Individual warm and cold LEDs have been combined into a single bulb by LED producers, allowing it to emit a good light balance.

Winner: LED

What Is a full-spectrum grow light: this growing option is a light that emits a spectrum similar to natural sunlight, including red light, green light, UV radiation, red light, and blue light.

Which Option Lasts Longer?

The average LED bulb has a lifespan between 10k and 50k hours, making it a better option than either fluorescent lights, HIDs, or incandescent lights. A good fluorescent grow light can be expected to last 20,000 hours.

Winner: LED

LED Vs. Fluorescent Grow Lights: Which Is Better

While LEDs or fluorescent grow lights can be a good choice depending on the situation, the full-spectrum LED is usually the better option for indoor growers. The LEDs make more sense than fluorescent grow lights or other options between the lower energy bills, the higher light output, little heat, and long-term affordability. That said, fluorescent fixtures can be a great choice if you’re looking for a more affordable upfront cost – or you’re looking for a light for seed starting.

Should You Use A Grow Tent?

Whether you’re using LEDs or fluorescent grow lights, a grow tent is always an excellent option for growing in a small space. Grow tents provide a suitable atmosphere for your indoor garden, allowing you to have fresh vegetables all year. Grow tents allow you to manage the amount of light, water, temperature, and humidity in your growing environment, allowing your plants to grow quicker and more robust – with better energy efficiency.

Grow Tent Options

Conclusion

When it comes down to it, the choice of LEDs vs. fluorescent lights comes down to preference and need. The bottom line is that LEDs are better options in the long term than other lighting systems, based on their efficiency and quality. That said, different types of plants, such as small plants, can do very well under a fluorescent light. But as LED technology continues to improve, the cost difference gap will continue to close, and the type of bulb you purchase will likely not be in the fluorescent, incandescent, or HID category for too much longer.

If you need help hanging a new set of artificial lights, and happen to live in the Chicago area like us, consider calling Fix It People to take care of it for you!

Do you have grow lights and opinions? We want to hear them! There is a lot of healthy debate in the grow light space. If you have thoughts on this topic or experience growing with fluorescent lamps, please let us know. We may even feature you in an upcoming article.

LED Grow Lights Vs. HPS: The Ultimate Comparison Guide For Indoor Growing

Whether you’re a seasoned indoor grower or you’re starting for the first time, you may have heard about the debate between LED grow lights vs. HPS grow lights.

This is a common question for indoor growers, specifically cannabis growers, and you want to make sure you have the right light for energy efficiency, high yields, and healthy plant and flower shape.

This article looks at the different factors of these grow lights, including light intensity, light penetration, yield potential, energy efficiency, overall price, and the upfront cost. By the end of this post, you will understand these different options and know which type of light makes the most sense for you.

And if you don’t want to go into depth on it, that’s fine too. We provided a simple explanation of which option we recommend in most situations below.

Before You Read Further

The debate between HPS and LED lights is still pretty heated, and there is legitimate evidence on both sides. In this article, we’re attempting to wade through some of the evidence provided by both sides and give you the tools to buy the best lights and get a better yield on your indoor garden. If and when more data or technology become available, we will update this article as needed.

Help us grow! This post contains affiliate links, which means we receive a commission if you click a link and purchase something recommended. All opinions however are our own and we do not accept payments for positive reviews.

LED Grow Light Vs. HPS

For most indoor growers, the modern LED grow light is usually superior to HPS lights or other HID options. The light emitted from an LED gives plants a better balance of red, blue, and green (similar to natural sunlight). It also produces higher plant yields using less power, lower electricity costs and requiring fewer additional costs.

While HPS bulbs are usually a cheaper upfront option, once you consider the cost of the fixture, additional costs of HVAC, and ventilation, LEDs are the best option and most affordable option in the long run.

There are a few exceptions to this, and there are still good lights within the HPS fixture camp. But an LED system usually is your best option in terms of performance and cost savings.

Here are some of the best small LED grow lights on the market regarding PAR output per watt, based on a study completed by MIGRO in 2021.

Of the options listed above, most are available on Amazon, so I included a comparison chart of those below:

The Best Small LED Grow Light

Unfortunately, MIGRO wasn’t one of the options on Amazon. So you can purchase from them on their site.

Let’s go into the definitions and factors that led us to this decision.Are these options too big for your needs? Looking for a small indoor grow light? Start with this post.

Why Is This So Complicated?

We’d be lying if we said the information below is simple. But to accurately compare these two systems, we have to take a step back and look at a few basics of grow lights. Notably, we need to first understand how efficiently a lighting fixture uses electricity and emits light. Then we need to know how effective that specific light is at reaching the canopy of your plants and then giving them the correct spectrum of lights. It gets even more complicated when you consider that different types of plants have different needs, and the spectrum of lights can affect the shape and flowering capabilities of those plants. 

And finally, you have to think about the additional accessories that come along with your fixtures. HID units produce a lot of heat, so you can usually expect to pay more on additional equipment and electricity to keep your growing space cool and ventilated.

Dr. Bruce Bugbee, the founder of Apogee Instruments, was interviewed in 2018 on the MIGRO lights Youtube channel discussing the differences between HPS lamps and LEDs. If you have the time, please start by watching this full interview:

Grow Light Basics

When using grow lights, there are a few primary considerations regarding quality: the color of light, the energy cost of light fixtures, and light intensity. Before we look at the battle of LED grow lights vs. HPS, let’s start by understanding the needs of your plants.

Color Of The Light

We all know that plants use light to grow – but have you ever thought about how the color of light affects your plant growth?

The sun emits the entire spectrum of seeable light, which includes red, orange, yellow, green, blue, indigo, and violet. This is what we call full-spectrum light or white light.

When it comes to artificial light, most indoor plants thrive under full-spectrum bulbs, which generate a balance of cool and warm light that mimics (or at least tries to mimic) the sun. They’re great for seedlings, houseplants, culinary herbs, and a variety of other plants.

In broad terms, blue light specifically helps support leaf and stem development. Red light benefits flower growth, so it’s essential for plants that produce fruit. That said, there’s a lot of information out there about the specific benefits of red and blue lights. And some of it is misleading.

Here’s a good video on common misconceptions around the color spectrum, specifically red and blue light.

https://www.youtube.com/watch?v=NMVP7Nvew0A

Lumens vs. Par

While it may seem obvious, it’s easy to forget that plants and people perceive light very differently. Humans perceive color using photopic vision. Plants use photosynthetic active radiation (PAR), which is the wavelengths of light that drive photosynthesis. Here’s a wonderful article on the differences between PAR and lumens.

Grow Light Intensity

The total quantity of grow light produced by an LED, HPS, or other light source per second is measured in PPF (Photosynthetic Photon Flux). This is what we would call the grow light intensity. Micromoles per second (umol/s) is the unit of measurement.

How Much PAR Does The Light Produce?

PAR (photosynthetic active radiation) refers to the wavelengths of lights that drive photosynthesis in plants. To measure the amount of PAR produced by a system per second, we use Photosynthetic Photon Flux (PPF).We should point out that PPF does not tell you how much of the measured light reaches the plants, but it is crucial to know if you want to figure out how efficient a lighting system produces PAR.

How Much PAR Reaches Your Plants?

To measure the amount of instantaneous PAR that goes from your fixture to your plants, something called photosynthetic photon flux density is used (PPFD). This a measurement of the PAR that arrives at the plant from the lighting fixture.

To add more to this complexity, you need to take several PPFD measurements on a growing area and find the average. The reason for this is that grow lights are typically the brightest in the center, with the light decreasing toward the edges of the area. It’s possible (and likely) that a grow light manufacturer only provides the PPFD from the center space. As an article from Fluence explains, “To ensure you are getting actual PPFD values over a defined growing area, the following needs to be published by the manufacturer: measurement distance from the light source (vertical and horizontal), number of measurements included in the average, and the min/max ratio).”

Overall Intensity

The strength or amount of light produced by a particular lighting source is referred to as light intensity. It is a measurement of a light source’s wavelength-weighted power.

The lamp source determines the light intensity, and there are high and low light intensity fixtures, lamps, and bulbs. 

When it comes to indoor gardening, different light intensities have different purposes. Young plants, for example, typically need lower light intensity than vegetative and flowering plants.

Definitions: HPS Vs. LED Grow Lights

HPS Lights

HPS lights, or high-pressure sodium lamps, are under the umbrella of high-intensity discharge (HID) lights. HPS systems have been the industry standard for a long time, as they were more affordable, have high intensity, and produce significant red light.

They also provide a large amount of yellow light and are commonly used for street lighting and security lighting. For many years, indoor growers and greenhouse growers favored HPS lights because of the massive outputs of the wide color spectrum produced by the relatively affordable lights.

During the flowering stage, red light is critical, and HPS has been shown to boost harvest output.

That said, the high-intensity output of High-Pressure Sodium lights generates a lot of heat. Because of this, you often need to have additional ventilation, fans, and HVAC systems to regulate temperature and keep the needed airflow. This can cause your expenses to rise quickly.

In many circles, one of the primary critiques of HPS lighting is that it doesn’t produce enough blue light, which can make a significant impact on the plants, causing them to stretch.

While HPS has remained the king of grow lights for decades, its reign is quickly coming to an end. HPS lights, as a whole, have not improved for many years. On the other hand, LEDs have drastically improved in the last couple of years, making them more effective and more affordable.

LED Lights

What Are LED Lights?

LED stands for light-emitting diode. LED grow lights are luminaires that create light for growing plants by efficiently utilizing energy. To work, LED fixtures use two semiconductor materials – one that’s charged positively (protons) and one that’s charged negatively (electrons). These two particles combine, and energy is released as a photon. The amount of energy released determines the color of the light. The light is then directed in a specific direction and emitted.

Here is a brief video on how LED lamps work:

History of LEDs

Henry Josef Round reported the first light-emitting diode (LED) more than a century ago. However, the development of LEDs did not begin until the 1960s, when red LEDs were first employed in commercial electronic products such as TV signal lights and remote controls. 

LEDs have advanced rapidly since the 1990s, and they are now being considered viable alternatives for traditional lighting sources in greenhouses.

It wasn’t until recently that researchers could achieve greater emission power and make LEDs produce white light (full-spectrum light).

This new LED form uses less energy and produced much less heat than traditional incandescent lamps or HPS lamps. LEDs are also entirely made up of solid elements and can be made incredibly small.

What’s more, they can be customized, meaning you can emit any color of visible light on the spectrum in many cases. This smart lighting means you can manipulate the spectrum to better meet the needs of your plants.

Honorable Mention: Ceramic Metal Halide (CMH)

While we’re comparing HPS and LED lights in this article, we thought it was worth mentioning ceramic metal halide lights, which fall under the HID umbrella. They produce blue spectrum lights, which are great for vegetative growth. Overall, CMH has an excellent spectrum of light, very similar to LEDs.

What Are The Best LED Grow Lights?

Like everything, what’s best for one person may not work well for another. That said, here are some of the overall best LED grow lights on the market, broken out by use and price.

We’ve used data from MIGRO for this comparison. If there’s any question about the objectivity of MIGRO, seeing as they sell systems of their own, we should note that they list their own products as being in 4th place for best value by PAR output per $, and in 2nd place on the best value after three years.

The chart below considers the cost of the light vs. the PAR output (µmols/sec usable PPF) divided per dollar before taxes and shipping.

Here’s a comparison price of the products available on Amazon.

Three-Year Cost

The chart below compares the initial cost of the LED fixture and the cost of running it with electricity, using 750µmols/m2/sec, for three years. What’s interesting about this chart is that some of the more expensive units – many of which had lower rankings in the chart above – make up some ground in this comparison. Top-quality and higher-efficiency fixtures often have lower running costs, bridging the gap with some of these initially more affordable options.

LED Grow Lights Vs. HPS: Breakdown

Like all things, it depends. But below, we’ve broken down the winners and losers for these two lighting systems. We should point out that this is the normal situation, but there could be specific products in either the HPS or LED camps that are outliers.

Energy Efficiency

LEDs are the clear winner in the indoor growing space in terms of energy efficiency, especially compared to HPS lights. High-quality LED grow lights can provide comparable yields to HPS grow lights while using substantially less energy.

DelviroGrow completed a study in 2018, in which they compared ten 1000W HPS lights vs. ten 600W LED lights fixtures, specifically on cannabis plants. They found that LEDs was 40% savings when using LED grow lights vs HPS. LEDs are more energy-efficient, meaning they are more eco-friendly and affordable to run than HPS competitors.

Plight provided an interesting statistic on this, saying that “HPS will deliver approximately 34% of that energy in the visible light wavelength, while the LED will deliver 40-50% of its BTU energy as visible light.”

Coolest Temperature

LED lights typically produce minimal radiant heat, near or around 11%, while HID lights can produce a significant amount of radiant heat – close to 55%. In other words, LEDs don’t generate as much heat as HPS light bulbs in most situations.

Image by pllight.com

All this said, there are several situations where indoor gardeners could want their lights to produce heat. After all, the temperature is one of the most critical environmental factors for growth.

If you’re growing a plant that thrives at a greater leaf surface temperature, you should consider radiant heat when choosing your light source. In that situation, an HPS or other HID lighting fixture could be the best choice.

Winner: LED Lighting Fixtures

Best Light Penetration

The evidence in either direction is a little tricky. Overall, older versions of HPS outperform LED, but newer LED versions now match or overtake HPS lights.

LEDs are widely known to emit more light, but some research suggests that HIDs provide a more steady quality of light with better plant canopy penetration. This means that more light can travel below the canopy of your plants, allowing them to reach the lowest leaves and stems for better growth.

Growers must adjust the lights as their plants develop to maintain the proper overhead clearance for growth. LEDs do not always project well over long distances, so growers must change the lights as their plants grow. Fortunately, they produce less heat, so they can typically be closer to your plants.

The ideal distance varies depending on the lighting system and the plant. To put it another way, the light intensity near the diodes is significantly higher than it is a foot or two distant. In general, the variation in intensity for an HID bulb is substantially smaller. Plants get enough light from HIDs even when they’re further away from the light source.

Here’s a general rule of thumb for how far away your grow lights should be from your plants.

HIDs have proven to be trustworthy. In your grow tent or greenhouse, they can boost plant output, growth, and productivity. HIDs are also more widely used, in addition to providing consistent light quality.

Winner: Toss Up

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Easiest To Customize

One of the most extraordinary things about LEDs is that they are typically easy to customize the light for specific plant needs. These diodes can be targeted to a particular wavelength along the photosynthetic spectrum (visible and non-visible). This means you could customize your lights to have more blue diodes or red diodes.

Winner: LED

Easiest To Use

I know we’re saying it a lot, but LEDs clutch this one too. You often need more equipment with HPS lighting. With an LED light, you don’t need to worry as much about HVAC systems, ventilation, lamp hoods, or separate bulbs.

Winner: LED

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Lowest Upfront Cost

HPS lights typically have a lower upfront cost than LED lights. That said, LED technology has been closing the gap since the early 90s. In the battle of HPS vs. LED, high-pressure sodium lights take the cake…for now.

Winner: HPS

Lowest Overall Cost

The cost comes down to a few factors: efficiency and fixture cost. Similarly, the longer-lasting the bulb/fixture, the more affordable your costs will be over time.

Per watt for a traditional wattage fixture, HPS lighting is cheaper. But once you consider the cost of electricity – both for the fixture and the accessories, LED lights regularly save you the most money over time. 

Longest Lasting

LEDs not only save money by being more energy-efficient, but they also last longer. Many LED grow lights come with a 50,000-hour warranty. A single LED grow light might survive over ten years or perhaps longer, depending on how long each light is turned on each day. MH bulbs last about 10,000 hours, while HPS lights last about 16,000 hours.

LEDs not only have a longer life expectancy, but they also keep their brilliance. Growers may need to replace HIDs even sooner as they become dimmer as they are used. The longer service life of LED panels may assist in offsetting the higher initial price.

Winner: LED

Conclusion

While the comparison is complex, LEDs have become better and more affordable lights over time, while HPS fixtures have stayed about the same in terms of efficiency and quality. While HPS lamps are still primarily used in many commercial growing systems, they will likely be replaced in time by more affordable LED options in the years to come.

If you need help hanging a new set of artificial lights, and happen to live in the Chicago area like us, consider calling Fix It People to take care of it for you!

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