How much heat should a t5 grow light generate? 2020 Updated
If you’re sick of putting your seedlings in a windowsill that doesn’t get much sun, or you just want to super-charge your indoor gardening process, you should consider a T5 grow light. Your seedlings, herbs, and greens will respond immediately to the increased amount of light you’re giving them.
But it’s not enough to just put a few light bulbs over your plants. If you already have lights, chances are they’re T8’s or T12’s and you should consider purchasing indoor grow lights that are optimized for your plants.
Just like HID's, T5 fluorescent bulbs use electricity and a chemical reaction to give you light. However, that's where the similarities stop. T5 grow lights have a small bit of mercury and gas (usually argon) inside of themselves to generate light. They're ignited with a small current of electricity, but unlike HID's that give off a really big, bright light, the light that's generated from this chemical reaction is mostly made of UV wavelengths which we usually can't detect with our own eyes.
So how does that produce light we can see? Ever notice how HPS grow lights are clear but T5 fluorescent grow lights are coated all white inside? That coating is made out of a phosphor that reacts with the UV rays to give you light. Depending on the combination of phosphors used, you'll get the white or yellowish light you're used to seeing. T5's don't need to heat up very much to give you light, and the energy it takes to heat up that material to give you light is lower than most other sources of light.
Growing With T5 Lights: Benefits and Savings
Efficiency
Having an efficient grow means a number of things. The more efficient it is, the more you will grow in terms of yield, but the more you will profit since you will also be saving money on energy costs. There are plenty of grow lights that have the ability to blast your plants with light, but they will also waste a lot of it and suck a lot of power in the process. This not only costs more, but actually harms the environment. T5 lights have solved that problem to a large degree and have become some of the most efficient you’ll find.
Light Spread
Fluorescent tubes generate light from the whole length of the fixture not in one spot like it is in HID or Incandescent lights and that means you will get much better light spread on your plants. This is good because every plant that will be underneath these fixtures will get the same amount of light so they will grow in equal speeds not producing taller and smaller plants like it is in many other grow lights.
Best Fluorescent Grow Lights for Sale
Active Grow T5 4FT LED Strip Light

The Active Grow 23W 4FT LED Strip Light Fixture replaces T5 HO 54W fluorescent strip lights and features increased PPF efficiency, lower power consumption and 100% more effective spectrums for plant growth. Connect these fixtures end-to-end or via daisy-chain to give your plants’ uninterrupted light uniformity and keep your grow space clean with less wiring. Built in reflectors guarantee focused and even light distribution. Pure PC body is cool to the touch and allows for close proximity to the plant canopy for maximum effectiveness.
Hydroplanet T5 4ft Fluorescent Grow Lights

HYDRO PLANET T5 fluorescent lighting systems are becoming increasingly popular with hydroponic gardeners because of the energy efficiency and great yields that come with this type of lighting. Plants thrive under T5 fluorescent lights, without the excessive cost that often comes with traditional metal halide or HID systems.
But it’s not enough to just put a few light bulbs over your plants. If you already have lights, chances are they’re T8’s or T12’s and you should consider purchasing indoor grow lights that are optimized for your plants.
Just like HID's, T5 fluorescent bulbs use electricity and a chemical reaction to give you light. However, that's where the similarities stop. T5 grow lights have a small bit of mercury and gas (usually argon) inside of themselves to generate light. They're ignited with a small current of electricity, but unlike HID's that give off a really big, bright light, the light that's generated from this chemical reaction is mostly made of UV wavelengths which we usually can't detect with our own eyes.
So how does that produce light we can see? Ever notice how HPS grow lights are clear but T5 fluorescent grow lights are coated all white inside? That coating is made out of a phosphor that reacts with the UV rays to give you light. Depending on the combination of phosphors used, you'll get the white or yellowish light you're used to seeing. T5's don't need to heat up very much to give you light, and the energy it takes to heat up that material to give you light is lower than most other sources of light.
Growing With T5 Lights: Benefits and Savings
Efficiency
Having an efficient grow means a number of things. The more efficient it is, the more you will grow in terms of yield, but the more you will profit since you will also be saving money on energy costs. There are plenty of grow lights that have the ability to blast your plants with light, but they will also waste a lot of it and suck a lot of power in the process. This not only costs more, but actually harms the environment. T5 lights have solved that problem to a large degree and have become some of the most efficient you’ll find.
Light Spread
Fluorescent tubes generate light from the whole length of the fixture not in one spot like it is in HID or Incandescent lights and that means you will get much better light spread on your plants. This is good because every plant that will be underneath these fixtures will get the same amount of light so they will grow in equal speeds not producing taller and smaller plants like it is in many other grow lights.
Best Fluorescent Grow Lights for Sale
Active Grow T5 4FT LED Strip Light

The Active Grow 23W 4FT LED Strip Light Fixture replaces T5 HO 54W fluorescent strip lights and features increased PPF efficiency, lower power consumption and 100% more effective spectrums for plant growth. Connect these fixtures end-to-end or via daisy-chain to give your plants’ uninterrupted light uniformity and keep your grow space clean with less wiring. Built in reflectors guarantee focused and even light distribution. Pure PC body is cool to the touch and allows for close proximity to the plant canopy for maximum effectiveness.
Hydroplanet T5 4ft Fluorescent Grow Lights

HYDRO PLANET T5 fluorescent lighting systems are becoming increasingly popular with hydroponic gardeners because of the energy efficiency and great yields that come with this type of lighting. Plants thrive under T5 fluorescent lights, without the excessive cost that often comes with traditional metal halide or HID systems.
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