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Before you make a decision on what T5 grow lights to buy, first join me as I review some of the best T5 grow lights available on the market today.
When you see pictures of professional grow operations, the endless horizon of expensive high-wattage lamps can be daunting. Every grow room is different, and not every crop calls for intense plasma lighting.
Luckily, there’s a much cheaper and equally efficient system for your grow room: T5 grow lights. By joining the T5 revolution, you’ll save money, increase your overall harvest potential, and reduce your carbon footprint along the way.
Incredibly affordable price for a well-rounded system
Certified by ETL and has a 5-year warranty
Extremely cool running, and can be placed directly above the canopy
Allows 2-12 bulbs to cover every phase of growth
Large enough to cover a 4’x4’ or 5’x5’ space easily
The lifespan of bulbs are relatively short (1-2 growing cycles)
Streamlined setup with a plug-and-play system
Multiple configurations allow you to customize bulb-count for all stages of growth
Doesn’t run hot and can be placed very close to the canopy
At 32 pounds, this is one of the heaviest fixtures reviewed
The bulb intensity isn’t consistent with those that are considered high output
Utilizes LED technology to increase your savings on electricity costs
Bright light for an LED T5 system
Longest life expectancy that we’ve seen in bulbs
Give minimal to zero amount of heat, making it perfect for placing directly above the canopy
Excellent coating material that looks professional and handles condensation easily
Includes two dimming switches that enable growers with flexibility
Lighter in weight than most competitors
4-bulb configuration is optimal for every phase of growth
Has a tendency to flash once after the lights have been switched off. This can be an issue if it happens during the middle of the night cycle
Lightweight and sturdy light stand that’s easy to put together
Perfect setup your germinating and cloning needs
Easily adjustable ratchet system
Perfect for beginners
Not meant for vegetative and flowering stages of growth
The overall coating on the body isn’t high quality and rusts over time
One of the most affordable T5 grow-light system on the market
A high output of light that’s perfect for every stage of growth
Comes with two dimming switches
Discrete shipping option for those that require it
Extended reflectors are built-in for additional light coverage
240V industrial input only. All homes in the United States are 120V
The short lifespan of bulbs is due to the high power output
Professionally packaged and rapid shipment
Intense power output for a non-HO T5 system
Great for the flowering cycle of one large plant or multiple smaller plants
The weight within the system is not distributed evenly
The intense output of light gives off more heat than competing T5’s
It’s limited to only one power switch rather than two, thus limiting dimming options
Extremely affordable T5 high output system
Perfect for all stages of growth with minimal heat radiation
Comes with two switches to optimally dim according to your needs
Completely silent and well built
Vivosun’s customer service is excellent
Packaging issues due to broken lamps during transit
Incredibly reflective aluminium that increases overall light
Comes with a sturdy light stand that’s perfect for seeds and clones
Negligible heat output, making this T5 perfect for the early stages of growth
A complete and ready to use all-in-one grow system
Can only be used for earlier stages of growth and not as flexible as larger T5’s
Awkward placement of the cord lock on the light stand that makes it difficult to adjust
The light output of a 2’ T5 isn’t as optimal as a 4’-8’ T5
Comes with an easy to assemble stand
The entire system is incredibly lightweight, which makes it easy to transport
Perfect for germinating seeds and maintaining clones
Not the best fixture for vegetative and flowering cycles
There’s nothing worse than your T5 grow light malfunctioning during the last two weeks of your bloom cycle. Instances like these can easily make or break your harvest and lead to underwhelming results. Not only could an outage or spark ruin your grow, but it could also potentially have life-threatening consequences.
To avoid these unnecessary issues, I can only recommend that you buy T5 grow lights that are formally rated by regulatory bodies, such as Conformance European (CE), Intertek Testing Services (ETL), Canadian Standards Association (SA), and Underwriters Laboratory (UL). All of the T5’s that we review here conform to these standards.
By buying T5 grow lights with these credentials, you can rest easy knowing that your equipment was built with safety in mind.
Another essential aspect to look for when buying the best T5 grow light is the amount of lamps. T5’s generally come with 2, 4, or 8 bulbs depending on the size of your grow space. This is a critical aspect to know before you buy.
Whether you grow in a room or a grow tent, the number of cannabis plants will be the determining factor in this category. In my experience, as long as your plants receive a full 360° coverage, they’ll happily produce ample buds.
To determine how many bulbs you’ll need in your T5 grow system is to know how many plants will be in your grow room. Other important aspects of assessing beforehand are: how big or small will your plants be during flowering? Will you utilize the Screen of Green technique (SCROG) or the Sea of Green method (SOG)?
I’ve seen countless grow operations where a single cannabis bush required a full 8-lamp T5 grow system all to itself. On the other hand, you could potentially fit 9 small cannabis clones under the same 8-lamp T5 system.
This must be the question you’ve been waiting for. There are a plethora of benefits when it comes to growing with T5 systems. These lights are highly flexible to fit the needs of beginners to green-thumb professionals. Let’s take a look at what the best T5 grow lights offer.
Adaptability is the T5 grow lights best trait. Just as species throughout time have adapted to exist in their given environment, so does the T5. No grow room or grow tent is created equal. Each and every grower has a unique situation that can’t be replicated, and it’s for this reason that T5 manufactures built in some necessary functions.
The most significant advantage is that T5’s can be hung in a wide variety of ways: overhead, vertically, or horizontally. Their slim profile allows them to be raised even higher when your cannabis plants begin to explode in growth during the first few weeks of flowering.
Traditional HPS (high-pressure sodium) and MH (metal halide) lamps are bulky, and this disadvantage forces you to concede at least a foot in vertical space to accommodate their size.
Another crucial advantage is the ability to dim your lamps. High-quality T5 grow systems have built-in power switches that allow for 25, 50, and 100% power output.
This benefit allows you to dim your power output during the earlier phases of growth since cannabis plants don’t respond well to high amounts of light during this period. It’s also a mechanism to save you money when you don’t need to run your lamps at 100%.
Since T5 grow systems are optimized for flexibility, they can be used in all phases of a cannabis plant’s life cycle.
If you’re one of the few that enjoys growing cannabis by seed, then you know that young sprouts need enough light to avoid stretching. T5’s allow for you to dim the bulbs and reduce the power output by 50-75%. This amount of light is perfect for keeping sprouts short and without inducing any additional stress.
During the vegetative phase, you can increase your power output to make sure your cannabis plants are receiving the light they crave to fuel their growth. T5’s are perfect for keeping close enough to the canopy without the worry of inducing heat stress. In stark contrast, HPS and MH need to at least 6”-12” or more above the canopy to avoid heat stress.
Your T5 can be placed 1”-6” above the canopy, which also enables your plant to grow short nodes. The reason for having little space between nodes is that your plant will stretch less during flowering and bud sites will remain compact.
During the flowering stage, you can boost your power output to 100%. This allows your buds to grow without hindrance, all the while keeping your T5 4”-6” above the canopy.
All of these aspects enhance the quantity of your eventual harvest and keep your grow room efficient. T5’s give us the ability to control so many important factors in growing marijuana.
With so many high-quality products available, it can be a difficult task to choose one. Our top choice after comparing and contrasting the pros and cons of the best T5 grow lights is the Hydrofarm Agrobrite FL22 T5. The Agrobrite was the best T5 grow light because of its ability to handle any situation.
Many of the other T5 grow lights reviewed are optimal at what they do, but many are limited to specific use cases, such as germination and cloning, or vegetative and flowering phases. Depending on your needs, one of these T5 grows lights may fit your situation perfectly.
The Agrobrite fulfills all the requirements that we look for a T5 grow light system. It’s certified by ETL, has flexible dimming options, lightweight, and comes with an industry leading 5-year warranty.
If you’re ready to save money and increase the efficiency of your grow room, the time is now to make the switch to the best T5 grow light available.