Agrobrite FLT24 T5 fluorescent grow light system review – all sizes

  • Flowering stage: T5 cannabis lights are not the best choice for the flowering stage
  • Inefficiency: T5 lights produce approximately 20-30% less light per watt of electricity used when compared to other grow light types.
  • Smaller yields: T5 lights produce smaller yields per watt in the flowering stage when the buds are developing, compared to other kinds of grow lights. LEDs and HIDs can produces between 2 and 4 times the yield per watt.
  • Penetration: Light from T5s does not penetrate far into the plants. The light is not powerful enough to nourish plants in the flowering stage. T5s are most suited to plants that are short and flattish.
  • Require space: Although they can be placed only inches away from the plants, T5 grow lights are still bulky because they are 2 or 4 ft in length. Because they are comparatively inefficient, more lamps are required to produce the same output as a single 600 watt HPS light, for example.

Best T5 grow lights for marijuana

Best overall T5 light system – Agrobrite FLT24 T5 Fluorescent Grow Light System

Agrobrite FLT24 T5 Fluorescent Grow Light System

The Agrobrite Fluorescent Grow Light system from Hydrofarm  includes the fitting, reflectors and bulbs (ballast??). The T5 system comes in 2 ft and 4 ft lengths. You can use 2, 4 or 8 fluorescent tubes with the 2 ft system, and 4, 6, 8, or 12 fluorescent tubes 4 ft system.

The 2 ft, 4 bulb fixture is the best overall T5 grow light choice for indoor weed growers. It is a low-profile fixture: perfect for growing in tight vertical or horizontal spaces .

The Agrobrite T5 system comes with 6400 k bulbs and multiple switches. You can control how many lamps are on at any given time.

Hydrofarm has a good reputation as a supplier and offer many different products.

The Agrobrite fluorescent T5 grow light system delivers performance, flexibility, and high lumen output.  You can choose multiple hanging configurations to meet grow room’s needs and desigh.

The T5 system provides double the light energy of many fluorescent systems, by offering premium grade specular aluminum and energy-efficient, high-output T5 bulbs.

The system comes with a 5-year warranty on the ballast and 1-year overall warranty.

You can check online and see that there are lots of happy owners growing healthy plants with this lamp. It’s 432 watts and 40,000 lumens of artificial sunlight.

There are many happy owners and buyers online.

To start with, Hydrofarm backs with a 5-year warranty on the ballast and 1-year warranty against defects in general. Second, this offers a selection of on/off switches to help you keep on top of the number of bulbs of the 8 in total you need lit. It is simple to change the light bulbs if you wish to add red spectrum bulbs. Third, the light fixture is powder-coated therefore it appears nice withstands rust and scratches.

Just like the DuroLux T5 light system, this light has a highly-polished German aluminum reflector for optimum output. You are able to suspend the lamp horizontally, vertically, or over head. It measures TWENTY EIGHT ins by 48.25 ins long by 4.25 inches thick. It has a ten-foot long electric cord, that could be the only one letdown (the other lamps above have longer cords).

T5 fluorescent grow lights are seeding, cloning and vegging specialists and the AgroBrite line from Hydorfarm continues that legacy.T5 fluorescent grow lights are seeding, cloning and vegging specialists and the AgroBrite line from Hydorfarm carries on that legacy.
There is good reason these are the only T5 fixtures we have reviewed.
They are priced much more affordable when compared to competition of comparable level of quality and achieve much more than any kind of similarly priced lighting systems. They can be found in Seven different sizes, from a 2 foot, 2 bulb unit to a 4 foot, 12 bulb unit. Regardless of the size of your grow room, there is an AgroBrite light fixture to cover it.
T5 fluorescent grow lights produce a lot less heat and make use of much less energy than metal-halide lamps and they are cheaper initially, as well. They do not beat LED lighting when it comes to heat or electricity usage, but are certainly cost much less.
Their primary downside is they are not good at all for the flowering stage. If you are interested in a flowering light, you are significantly better off with LED grow lights or with metal-halide lights.
But if you need a light for vegging, cloning or for your seedlings, the Agrobrite fixtures are perfect.

Hydrofarm AgroBrite T5 Grow Light FeaturesUses 48 to 648 watts – wattage depends on the number of bulbs and their length; see table below4000 to 60,000 lumens – also depends on the number of bulbs and their length; see table belowIncludes 6400K T5 bulbs – ideal for vegging stage of growthCan hang 3 ways – overhead, vertical or horizontalPowder coated steel housing – sturdy and sleekHigh performance faceted specular aluminum – better light distributionDaisy chainable – run multiple fixtures from one outletMultiple on/off switches on larger fixtures – control the lumen output by turning off bulbs when less light is needed and save money>>> Read owner reviews on Amazon


Hydrofarm Agrobrite T5 fluorescent fixture

The largest Agrobrite fixture: 12 bulbs at 4 feet each

Hydrofarm’s Agrobrite series of T5 fixtures come with 6400K spectrum T5 grow bulbs, making them perfect for seeding and cloning. They are also excellent at vegging.
The Agrobrite fixtures come in a number of different sizes: 2 tube, 4 tube and 8 tube fixtures for 2 foot bulbs and 4 tube, 6 tube, 8 tube and 12 tube fixtures for 4 foot bulbs.
The table below gives the power consumption in watts and the output in lumen for each fixture size. It also shows the size and weight of each fixture. You can select the bulb length and the number of bulbs on the Amazon product page. That will also show you the current best price for each fixture, since Amazon update their prices too often for us to accurately quote them.
Fixture Size Wattage Lumen Dimensions Weight2 ft. 2 bulb 48 4000 26″ x 9″ x 5″ 7 lbs2 ft. 4 bulb 96 8000 23″ x 13.5″ x 3″ 11.6 lbs2 ft. 8 bulb 192 16,000 30″ x 25″ x 5″ 22.6 lbs4 ft. 4 bulb 216 20,000 48.5″ x 15.5″ x 4.2″ 18.3 lbs4 ft. 6 bulb 324 30,000 46″ x 19.5″ x 3″ 22.2 lbs4 ft. 8 bulb 432 40,000 48.2″ x 28″ x 4.2″ 26.7 lbs4 ft. 12 bulb 648 60,000 48.2″ x 40.5″ x 4″ 40.6 lbs
The biggest advantage of the Agrobrite series of fixtures is the low cost. Comparable metal-halide lights cost much more, especially when you consider that you need to purchase the reflector, the bulb and a ballast. All of those are included in an Agrobrite fixture. And we all know how expensive quality LED lights are.
Hydrofarm Agrobrite T5 fluorescent grow light review

The smallest Agrobrite fixture: 2 bulbs at 2 feet eachAnother advantage over metal-halide is a lower heat output and a lower power consumption. The former is especially important for seedlings and clones.
A scorching metal-halide bulb can very easily damage these delicate young plants. The T5 fluorescent bulbs can hang inches from the plants and not cause damage, since they radiate very little heat. This is what makes them the perfect light for young plants.
When it comes time to veg, metal-halide bulbs might work a little better, but that comes at a cost. They run much hotter (cooling systems are not cheap to set up or to run), they use more power and a complete MH fixture is much more expensive.
The high-performance faceted specular aluminum used on the inside of the fixtures is the ideal reflective surface for light. Regular reflective surfaces reflect light back directly, making for multiple hotspots. This uneven distribution causes certain parts of your plants to get more light than others. This can lead to uneven growth and could potentially even damage the delicate leaves, if the hotspots are hot enough.
Specular aluminum reflects light back in multiple directions. This makes for a much more even distribution. Naturally, some of the light will be reflected in a direction other than down at the plants, but the shape of the reflector ensures that all of the light will eventually be directed onto the canopy after a bounce or two. No light is wasted and every part of the canopy gets the same amount of light.
agrobrite T5 fixture multiple on and off switchesMultiple on/off switchesAnother great feature of the Agrobrite T5 grow lights are the multiple on/off switches. This allows you to turn off only some of the tubes whenever you don’t need full power, saving you in electricity costs.
For example, seedlings do not need as much light as vegging plants, so you could turn off half the bulbs while your plants are very young, then turn them on when the plants are larger and need more light to grow fast and strong.
The Agrobrite fixtures can be daisy-chained together. This means you can run a bunch of lights from the same outlet. They are also very flexible in how you can hang them. They can hang overhead, horizontally on the side and vertically. No matter which part of your garden needs the light, these fixtures can get it there.
Hydrofarm gives you a 10 foot power cord with each light. This is generally long enough to reach the nearest outlet. Most brands have shorter power cords (usually 6 feet), which virtually guarantees you need to purchase an additional extension cord.
Finally, Hydrofarm fixtures come with a 5 year manufacturer’s warranty (there’s a link to it on the Amazon page, but only for some sizes: check the 2ft, 4 bulb page). This removes the purchasing risk, since you know you can get your light replaced should anything go wrong during the next 5 years. Very few manufacturers of T5 lights include any kind of warranty, much less one this long (if they have a warranty, it’s usually just one year).
Hydrofarm Agrobrite fixtures cost the same as, or less than, comparable T5 lights, but they are constructed to the Hydrofarm standard. These are high-quality fixtures with high-output T5 tubes at a much lower price than you would generally pay for comparable brands. And the 5-year warranty guarantees that.


The main disadvantage of any fluorescent grow light is the usefulness during flowering. They can certainly be used for flowering, but they just don’t have the power to give you the same results as an HPS bulb or a good LED light.

You can improve results by swapping the bulbs out for warmer ones with a temperature of 2700 to 3500K. But even then, T5 fluorescent lights are not ideal for flowering. That said, they cost less initially, use much less power and emit less heat than the alternatives. Some people are happy to sacrifice a bit of yield for those advantages.
The other disadvantage is that, for a large garden, electricity costs and heat output start to add up with fluorescent lighting. This is where LED grow lights start to make more sense, even if you’re only vegging, but especially if you need lighting for all grow cycles.

Summary of Hydrofarm AgroBrite T5 Grow Light Review

The Agrobrite line of T5 fluorescent lights from Hydrofarm are the only T5 fixtures we’ve reviewed on this site for a reason. They are easily the best value on the market AND they come with a 5 year warranty, which is unheard of in this price range.

Yes, there are better lights, but they cost a lot more. And obviously, there are cheaper lights, but they just don’t perform well enough to give you good, strong plant growth. And again, none will give you a 5 year warranty.

If you’re looking for a light for your seeding or cloning room or if you need a vegging specialist, the AgroBrite T5 fluorescent grow lights are by far the best you’ll find at these prices. And with 7 different fixture sizes to choose from, they’ll cover virtually any size garden.


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