
T5 grow light fixtures are a popular choice among indoor gardeners and growers due to their efficiency and effectiveness.
They use T5 fluorescent tubes, which are 5/8 inch in diameter, and are known for their long lifespan of up to 20,000 hours.
One of the most significant benefits of T5 grow light fixtures is their ability to produce a high amount of light while using relatively little energy.
T5 grow lights are also very versatile and can be used in a variety of applications, including seed starting, propagation, and supplemental lighting for plants.
What Are T5 Grow Light Fixtures?
T5 grow light fixtures are a type of linear fluorescent lighting that uses a T5 tube.
They are relatively compact and energy-efficient, using about 20-25 watts of power per foot of length.
T5 grow light fixtures are often used in indoor gardening and hydroponics because they provide a broad spectrum of light that promotes healthy plant growth.
What is a T5 Grow Light?
A T5 grow light is a type of fluorescent grow light that uses a unique tube design to provide a high-intensity, broad-spectrum light for plants.
T5 grow lights are typically 5/8 inch in diameter and are available in a range of lengths, from 2 to 48 inches, making them a versatile option for growers.
These lights are designed to be energy-efficient, using less power than traditional grow lights while still providing excellent light output.
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T5 Grow Light Definition
T5 grow light fixtures are a type of linear fluorescent lighting that uses a compact, tubular design.
They are typically 5/8 inch in diameter and are often used in grow tents and indoor gardens.
T5 grow lights are known for their high lumen output and energy efficiency.
Their compact design makes them ideal for use in small spaces.
T5 grow lights are often used in combination with other lighting systems to create a balanced spectrum.
They are commonly used for seedlings, cuttings, and young plants.
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Benefits and Use Cases
T5 grow light fixtures are a popular choice among indoor gardeners and growers due to their versatility and effectiveness. They're perfect for seedlings, cuttings, and mother plants in smaller grow spaces or where height is an issue.
You can use T5 lights to illuminate reptile enclosures, providing the correct light spectrum for living plants and reptiles. This is especially useful for zookeepers who need to tailor the light to meet the specific needs of their animals.
T5 lights are also recommended for aquariums, providing a lower lighting level that reduces the need for CO2 and fertilization, and lowers the risk of an algae outbreak. They can be paired with lighting timers and controllers to provide the required photo-periods for fish and plant life.
Here are some common use cases for T5 grow light fixtures:
- Indoor gardening
- Reptile enclosures
- Aquariums
Use Cases for T5 Grow Lights
T5 grow lights are incredibly versatile and can be used in a variety of settings. They're perfect for indoor gardeners who need to propagate and grow plants in smaller spaces or where height is an issue.
For example, T5 lights can be used to grow seedlings, cuttings, and mother plants, making them ideal for indoor gardening. You can choose from a range of sizes and light spectrums to suit your needs.
In fact, T5 lights are so effective that they're even used in reptile enclosures to provide the right light spectrum for living plants and reptiles. This is made possible by the variety of sizes and light spectrums available.
Aquariums also benefit from T5 lights, which provide the correct light spectrum for planted aquariums. This reduces the need for CO2 and fertilization, and also lowers the risk of an algae outbreak.
Here are some of the key use cases for T5 grow lights:
- Indoor gardening: perfect for seedlings, cuttings, and mother plants
- Reptile enclosures: provides the right light spectrum for living plants and reptiles
- Aquariums: provides the correct light spectrum for planted aquariums
By using T5 lights, you can create the right environment for your plants to thrive. And with the ability to buy different light spectrum bulbs, you can tailor the light to suit the specific needs of your plants.
Reasons to Buy at Hydrobuilder

The best growers in the industry trust Hydrobuilder. They're not just any online hydroponics store, but a go-to destination for both hobby and commercial growers.
The fact that they continue to attract top growers is a testament to their high-quality products, including fluorescent fixtures like T5 grow lights.
Hydrobuilder's reputation speaks for itself, with many growers returning time and time again to purchase from them.
How to Choose the Best T5 Grow Light
Choosing the best T5 grow light for your needs can be a bit overwhelming, but it's essential to get it right for your plants' health and growth. T5 grow lights come in various temperature choices, and it's crucial to match the temperature to your plants' growth stages.
T5 lights are more specific to the blue range of the light spectrum, making them ideal for seedlings and vegetative maturity stages. For flowering and production, you'll want to opt for bulbs with cooler wavelengths.
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The amount of space you need to cover is also a crucial factor in choosing the right T5 grow light. T5 fluorescents provide a lot of coverage, especially when combined with reflective barriers. However, it's essential to consider how much coverage you'll need based on the growth stages of your plants.
T5 grow lights are more efficient than T12 lights, with better lamp efficacy and less light depreciation over time. In fact, T5 lamps only lose 5% of their light output in their first 40% of life, compared to T12's 75% loss in the first 5,000 hours.
T5 grow lights also emit higher temperatures than T8s and T12s, with a peak temperature of 35oC (95oF). This means you'll need a good ventilation system or consider a T8 for a lower heat solution if your growing space is hot.
Here's a quick comparison of T5, T8, and T12 lights:
By considering these factors and choosing the right T5 grow light for your needs, you'll be well on your way to growing healthy and thriving plants.
T5 Grow Light Fixtures
T5 grow light fixtures are a popular choice among growers due to their energy efficiency and versatility. They are available in a variety of sizes, ranging from 1 to 12 lamps, making them suitable for small to large grow spaces.
Some T5 grow light fixtures come with a 6500k temperature output, which is ideal for early plant growth and development. Others offer a 6400k temperature output, which is suitable for plant stages up to production. The Hydrofarm Agrobrite FLT44, for example, has a 6400k temperature output and can be used for germination and seedling growth.
T5 grow light fixtures are also known for their low heat output, making them a great choice for growers who want to avoid overheating their plants. They can be mounted both vertically and horizontally, and some models come with hanging hooks and chains for easy installation. The Durolux T5 grow light, for instance, weighs only 9.75 pounds and comes with a 14′ power cord.
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Here are some key features to consider when choosing a T5 grow light fixture:
Overall, T5 grow light fixtures are a great choice for growers who want a energy-efficient and versatile lighting solution.
Agrobrite FLT24 System
The Agrobrite FLT24 System is a popular choice among growers, and for good reason. It's a reliable and efficient T5 grow light that's perfect for seedlings and young plants.
This system comes with four 2-feet tubes, which can be upgraded to bigger options if needed. The expected bulb life is 20,000 hours, and the system has on/off switches to turn on/off each bulb.
One of the best things about the Agrobrite FLT24 is its ability to provide a high daily light integral (DLI) of up to 6 DLI within 16-hour performance. This is perfect for growing seedlings, but if you're looking to grow lettuces or other green vegetables that require 12 DLI or above, you'll need to get a 4 4″ tube fixture or larger option.
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The system is also relatively affordable, with a 5-year warranty and 1-year coverage against defects.
Here are the key specifications of the Agrobrite FLT24 System:
- 6500K (daylight)
- 5-year warranty
- 1-year coverage against defects
- Four 2-feet tubes (and bigger options as well)
- Expected bulb life: 20,000 hours
- On/off switches to turn on/off each bulb.
Overall, the Agrobrite FLT24 System is a great choice for growers who want a reliable and efficient T5 grow light for their seedlings and young plants.
Durolux
Durolux is a popular brand in the world of T5 grow light fixtures. They offer a range of options, but one of their standout features is their affordability. The Durolux T5 Grow Light, for example, is a quality light fixture that won't break the bank.
One of the things that sets Durolux apart is their lightweight designs. The Durolux T5 Grow Light, for instance, weighs just 9.75 pounds, making it easy to move around. This is especially useful for smaller grow spaces where space is limited.
Durolux fixtures are also known for their versatility. The DuroLux T5 DL844s Ho Fluorescent Grow Light, for example, can be hung vertically or horizontally, and even daisy-chained with up to 5 units together to cover larger grow spaces.
The Durolux T5 Grow Light is a great option for growing seedlings and veg green plants. It emits up to 20,000 lumens when running four tubes simultaneously, making it a great choice for smaller grow spaces.
Here are some key features of Durolux grow light fixtures:
- Lightweight designs (e.g. Durolux T5 Grow Light weighs 9.75 pounds)
- Versatile mounting options (e.g. can be hung vertically or horizontally)
- Daisy-chain capability (e.g. up to 5 units can be chained together)
- Affordable prices (e.g. Durolux T5 Grow Light is more affordable than the Agrobrite)
- Various lamp quantities and temperatures available (e.g. 4-8 lamps, 6500k-6400k temperature range)
Ferry-Morse Indoor Fixture 24x11
The Ferry-Morse Indoor Grow Light Fixture with T5 Bulb 24x11 is a compact and versatile option for indoor growing. It's a great choice for small spaces, and can be used in a variety of settings, from seedlings to mature plants.
This fixture is suitable for growing a wide range of plants, including leafy greens and herbs. It's also a good option for growers who want to control the light spectrum, as it allows for the use of different T5 bulbs.
The Ferry-Morse Indoor Grow Light Fixture with T5 Bulb 24x11 is a relatively low-profile fixture, making it easy to place in tight spaces. It's also lightweight and easy to move, allowing you to adjust the light's position as needed.
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One thing to keep in mind is that this fixture requires careful handling, as the bulb is fragile and needs to be removed from its protective foam before use. With proper care and handling, however, this fixture can be a reliable and effective choice for indoor growing.
Here are some key features of the Ferry-Morse Indoor Grow Light Fixture with T5 Bulb 24x11:
- Compact design for small spaces
- Suitable for a wide range of plants
- Allows for control of light spectrum with different T5 bulbs
- Low-profile and lightweight for easy placement and movement
- Fragile bulb requires careful handling
T5 Grow Light Options
The Sun Blaze T5 HO Fluorescent Indoor Grow Light Fixture is a popular choice, offering a range of sizes to suit different needs.
With 1-8 lamp options, you can choose the right amount of light for your space.
These lights are lightweight and easy to install, making them a great option for growers who need flexibility.
The T5 HO Grow Light Fixtures come standard with 6500k degree bulbs, providing a high-quality light spectrum for your plants.
You can also use easy-to-install replacement lamps down to 3000k red spectrum lamps.
Here are some key features to consider:
- Lamp Quantity: 1-8
- Temperature: 6500k
- Works with timers: yes
- Warranty: 1 year
These lights are versatile and can be used in a variety of ways, including for growing both producing and non-producing vegetation in any stage of growth.
T5 Grow Light Comparison
T5 grow lights are a popular choice for growers, but they have some limitations. They don't provide enough lightwaves for maximum harvest before a certain stage of growth.
One of the main advantages of T5 grow lights is their efficiency. T5 lamps have a higher lamp efficacy (lm/W) than T8 and T12 counterparts, with some T5 lamps emitting as much as 104 lumens per watt.
In terms of light depreciation, T5 lamps hold up well over time, losing only 5% of their light output in their first 40% of life.
However, T5 lights also emit more heat than T8 lights, with a peak temperature of 35oC (95oF) compared to 25oC (77oF) for T8 lights. This can be a concern for growers with hot growing spaces.
Here are the key differences between T5 and other types of grow lights:
Overall, T5 grow lights are a good choice for growers who want a cost-effective and efficient option, but they may not be the best choice for growers with hot growing spaces.
HPS vs CFL
HPS grow lights are more energy-efficient than CFLs, using 35-50% less energy to produce the same amount of light.
CFLs, on the other hand, have a shorter lifespan of around 8,000 to 10,000 hours, compared to HPS grow lights which can last up to 24,000 hours.
HPS grow lights also produce a higher lumen output, with some models reaching up to 200,000 lumens, while CFLs typically top out at around 80,000 lumens.
In terms of heat output, HPS grow lights are significantly cooler than CFLs, with some models emitting as little as 10% of the heat of a CFL.
5 Best Comparisons
T5 grow lights are a popular choice for plant growth, but they have their limitations. They produce plants that are not receiving enough of the correct lightwaves for maximum harvest prior to this stage of growth.
However, T5 lights are a good supplemental light for household plants that are non-productive. They also support plants up until this point.
T5 lights are more efficient than T8 and T12 lights, with better lamp efficacy (lm/W) and a longer lifespan. In fact, T5 lights lose only 5% of their light output in their first 40% of life.
T5 lights emit higher temperatures than T8 and T12 lights, which can be a concern in hot growing environments. To mitigate this, a good ventilation system is essential when using T5 lights.
Here's a comparison of T5, T8, and T12 lights in terms of lamp efficacy and light output:
T5 lights are also more cost-effective than T8 and T12 lights, despite emitting far more photons to plants. However, if your growing environment is hot, you may want to consider a T8 or T12 light for its lower heat solution.
Full-spectrum LED lights are considered the future of grow lights, but they are still more expensive than T5 lights. If you can afford it, LEDs are a great option, but if not, T5 lights are still worth using for propagation and green vegs.
Reviews and Recommendations
When choosing a T5 grow light fixture, it's essential to consider the number of lamps it comes with. Most T5 grow light fixtures come with between 4 and 8 lamps.
One of the key features to look for is the color temperature of the light. Some T5 grow light fixtures, like the ones mentioned in our top reviews, have a temperature of 6500k, which is ideal for promoting healthy plant growth.
If you want to automate your grow light, look for a fixture that works with timers. Fortunately, many T5 grow light fixtures, including some of our top picks, have this feature.
Warranty is also an important consideration when investing in a T5 grow light fixture. Some manufacturers, like those in our top reviews, offer a 2-year warranty for peace of mind.
Here are some key features to consider when choosing a T5 grow light fixture:
T5 Grow Light Tips and Advice
Using T5 grow lights is a great way to maintain vegetative states and influence healthy growth in plants. They're perfect for smaller spaces, and larger grows can chain together multiple units for large area coverage.
LightWave T5 units are shipped with blue tubes (Cool Daylight 6400 Kelvin) for propagating plants, but swapping out a blue tube with a red (2700k) bulb can provide a more balanced spectrum for healthier growth.
For aquariums, T5 light fixtures are recommended to provide the correct light spectrum for planted aquariums, reducing the risk of an algae outbreak. They also lower the requirement for CO2 and fertilization.
Here are some benefits of using T5 grow lights:
- Cost-effective
- Provide more light intensity to plants than CFLs, T8s, and T12s
- Easy to replace light tubes
- Can be used during any part of the plant's lifecycle
Pro Tip
These T5 grow lights are perfect for maintaining vegetative states in your plants, promoting healthy growth, and influencing them to bloom when the time is right. They're ideal for hobbyists who have limited space, as they can be adjusted to fit small areas.
You can chain together multiple units to cover larger spaces, making them suitable for serious growers who need more extensive coverage. Their light footprint is entirely adjustable, allowing you to customize the light energy for various stages of plant growth.
One of the benefits of these lights is that they produce very little radiant heat, which is a plus for growers who want to keep their plants comfortable.
How Many Hours a Day Should You Use a T5 Grow Light?
When using a T5 grow light, it's essential to determine the right number of hours to provide your plants with the necessary light spectrum. You can use the LightWave T5 lights with timers and controllers to give your plants the required amount of light for the right amount of time to replicate their natural environment.
To give your plants the right amount of light, you'll want to position the fixture between 15 cm (6") to 30 cm (12") above the plant canopy, as recommended in the LightWave T5 instructions.
The ideal number of hours to use a T5 grow light depends on the type of plants you're growing and their growth stage. For seedlings, cuttings, and mother plants, you can use the T5 lights for 12-14 hours a day, as they require a lower lighting level to prevent an algae outbreak.
Here's a rough guide to help you determine the right number of hours for your T5 grow light:
Keep in mind that using a T5 grow light for too many hours can cause an algae outbreak in aquariums, so be sure to adjust the light duration accordingly.
T5 Grow Light Fixtures for Specific Needs
T5 grow light fixtures are incredibly versatile, and one of the reasons they're so popular is because they come in a variety of sizes to suit different needs.
These lights can be used in tight spaces, making them perfect for small grow areas or as a supplement to larger grow systems. They're also easy to install and can be mounted both vertically and horizontally.
One of the key benefits of T5 grow light fixtures is their ability to support plants at different stages of growth. With a 3000-6500k spectral range, you can easily switch between different spectral wavelengths to support early plant growth, blooming, and production.
You can also connect multiple T5 lights together to create a customized lighting system, making them perfect for growers who need to support a large number of plants.
Here are some key features to consider when choosing a T5 grow light fixture:
- Lamp Quantity: 1-8
- Temperature: 6500k
- Works with timers: yes
- Warranty: 1 year
Frequently Asked Questions
Are T5 bulbs being discontinued?
Yes, T5 fluorescent bulbs were phased out in 2023 due to their high energy consumption and environmental concerns.
Which is better, T5 or T8 grow lights?
T5 grow lights are generally more efficient and have better output than T8s, making them a popular choice for growers
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