22W T8 HO 4FT LED Grow Lamp

32W Fluorescent Lamp Replacement
  • Save Energy and Bypass the Hassle

The Active Grow T8 High-Output 4FT LED Horticultural Lamp uses 40% less energy than fluorescent lamps and bypasses the ballast to eliminate buzzing, flickering and longevity issues.

  • Sun White or Red Bloom Spectrum

Choose between the Sun White Spectrum with a high CRI that mimics natural sunlight conditions and the Red Bloom Spectrum that boosts chlorophyll absorption rates and flowering cycles

  • Faster Growth Cycles

Speeds up growth rates by 20%

  • Extra Long Lifetime

Features a 30,000 hour lifetime until when lamps reach 90% of their initial output

  • Certified Safe

All lamp components and manufacturing processes certified safe by UL standards

  • Typical Applications

Commercial vertical farm or home grow racking systems for micro greens, cannabis propagation, germination and tissue culture

Technical Information

Grow Like a Pro

Product introduction

The Active Grow T8 High Output 22W 4FT LED lamp replaces T8 32W and T12 40W 4FT fluorescent lamps and features increased PPF output, lower power consumption and 100% more effective spectrums for plant growth. The T8 LED lamp has a 190° beam angle for wide light distribution and runs cool, so it can be placed closer to plants and save space.

Energy Saving

Uses 40% less energy than fluorescent lamps and bypasses the ballast to save more amperage

Efficient PPF Output

Features a high total photon PAR (400-700nm) output of 41 μmol/s (Sun White Spectrum) – 33 μmol/s (Red Bloom Spectrum)

Bypass Installation

Works with existing fluorescent fixtures and requires the user to bypass the ballast by re-wiring to single-ended power

Sun White or Red Bloom Spectrum

Choose between the Sun White spectrum with a high CRI that mimics natural sunlight conditions and the Red Bloom spectrum which is focused specifically on 445 nm blue and 660 nm red wavelengths

Extra Long Lifetime

Features an extra-long 30,000 hour lifetime

Low Heat Output

40% less heat output than fluorescent lamps

Does Not Contain Mercury

Active Grow Spectral Analysis

Active Grow Spectrums are designed specifically for plant growth and feature the latest phosphor chip technology to help cultivators dial in the perfect light recipe for various plant species.

Sun White Spectrum -Bring the sunlight indoors with the Active Grow Sun White Spectrum that features 15+ higher CRI than traditional fluorescents and other LED lamps. This light covers the majority of the PAR (400-700 nm) spectral range. The high CRI light also makes it easy to see the plant’s vivid colors and any issues with plant development. Includes 660 nm and 730 nm wavelengths that combine to create the Emerson Effect or a higher rate of photosynthesis, which speeds up plant growth by up to 20%. Mix and match with the Red Bloom Spectrum lamps and create the ideal growing conditions for your home or commercial grow operation.

Red Bloom Spectrum -Boost chlorophyll light absorption with the Active Grow Red Bloom Spectrum that features dedicated 445-450 nm (blue) and 660 nm (red) light for flowers, fruits, germination and cloning. Includes 660 nm and 730 nm wavelengths that combine to create the Emerson Effect or a higher rate of photosynthesis, which speeds up plant growth by up to 20%. Mix and match with the Sun White Spectrum lamps and create the ideal growing conditions for your home or commercial grow operation.

Suitable for the following plant species

🌱 Amaranth 🌱 Arugula 🌱 Basil 🌱 Peppers 🌱 Beets 🌱 Broccoli 🌱 Buckwheat 🌱 Cannabis 🌱Celery 🌱 Chia 🌱 Cilantro 🌱 Citrus 🌱 Clover 🌱 Collard Greens 🌱 Dill 🌱 Flax 🌱 Kale 🌱 Lettuce (Romaine, Boston, Iceberg) 🌱 Milkweed 🌱 Mustard Greens 🌱 Ornamentals 🌱 Orchids 🌱 Perennials🌱 Pothos 🌱 Rubber Plant 🌱 Spinach 🌱 Succulents 🌱 Swiss Chard 🌱 Turnip 🌱 And more… 

Fluorescent Fixture Retrofit Instructions

Watch the video to learn the steps it takes to bypass a standard T8/T12 fixture’s ballast by wiring directly to single-ended 120-277 volt circuits. Bypassing the ballast helps not only lower wattage, amperage and heat output but avoids flickering, buzzing, longevity issues and other problems associated with ballasts.

Active Grow T8 LED Grow Lights Vs. T8/T12 Fluorescent Tubes - Energy, Spectrum & PPFD

These tests were taken to compare Active Grow 22W T8 HO 4FT LED Horticultural Lamps and 32W T8 4FT fluorescent lamps in a 2 tube T8 fixture. The test focuses on three main areas: Energy Consumption, Spectral Analysis & PPFD Coverage.

Download PDF

22W T8 HO 4FT LED Grow Light Reviews

✮ ✮ ✮ ✮ ✮  Bright, light, and no flicker
I have a small three tier grow stand I use in the winter to start seeds that uses T12 lamps. I’ve been considering LED replacement for some time and wanted to remove the ballast for weight and heat reasons. I decided to do one 4 lamp fixture first, see how that went, and go from there. I opted for these lamps for a number of reasons, designed with an output for plants, direct wire, dual ends, uses T8/T12 tombstones, and a lumen output higher than others.

My fixtures are made for growing things. Everything is bolted down, not press fit. Some tombstones are riveted in place, some not. It also has an off/on switch and power out. Fortunately the fixture uses non-shunted tombstones so ones riveted in place worked out. I do not have test equipment to measure the exact output. To eye the light appears as bright as the lamps they replaced. There is less heat from both lamp and fixture. With ballast removed the fixtures are easier to move up and down. Time will be the real test. If these last like they should these are well worth time and cost. -Doug 01/15/19

✮ ✮ ✮ ✮ ✮  What a great service!
I am located in Edmonton, AB, Canada and currently growing orchids under fluorescent grow lights and wanted to switch to LED lights for economy. So I did some research. I came across some of the videos of Active Grow LLC and I got in touch with them by email to request information about their lighting system. Not only they provided the information I needed in a timely manner, they educated me about what type of lights will make my orchids flower. After few emails with the owner going back and forth asking questions and the information I needed to make a decision I purchased the lights. Unfortunately, when I gave them my address for delivery I have a typo in my address, which I realized just after the package was sent I contacted the owner and he quickly contacted the postal office to have the correction done. I got my lights a few days after!! What a great service! I really wanted to write this review to congratulate the owner Taylor for the EXCELLENTE CUSTOMER SERVICE I received from him. Professional, timely, informative and always courteous… and did I forgot to say I got my lights at a very decent price… Yup! Great price! Thank you! -Rocio 01/15/19

✮ ✮ ✮ ✮ ✮  Good Product
I purchased a full spectrum and a red/blue spectrum light to use in my greenhouse. Both lights were just what I wanted and are working well. Plants are very happy. -Krista 8/17/18

✮ ✮ ✮ ✮ ✮  Was very happy with these lights and made a video review
I did a complete experiment with these lights on Microgreens. I own a small Microgreens farm and wanted to try something that uses less electricity than a conventional light. I was very happy with these lights and made a video review. -Corey from Corey’s Cave 5/17/18

✮ ✮ ✮ ✮ ✮  Great output
I was happy to find a retro fit bulb to upgrade my old light fixtures. I haven’t had the chance to grow much so far but the light is bright, looks nice and has a very good natural white look to it. -Ryan 08/13/18

✮ ✮ ✮ ✮ ✮ These were packed so well that you could have dropped them off the roof and not hurt them. Absolutely the best packaging I’ve ever seen for a light! 110%. – Alex 10/22/18