T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum
T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum

T5 HO Ballast Bypass 4FT LED Grow Lamp – Sun White Spectrum

4-Pack
Regular price$129.00
/
Choose Your Spectrum: Sun White
Please note this product is currently only available on backorder & will ship early March 2024
  • Free US shipping (+$200)
  • Easy returns within 30 days

Our high output T5 grow lamps guarantee tighter internodal spacing & fuller, heartier plants all while saving you energy

  • Slash your energy & HVAC bills with 60% power savings
  • Produce stronger roots & create new leaf & budding sites
  • Grow consistent & uniform trays of plants
  • No flickering, buzzing or longevity issues
  • Low heat output is safe for plants & growers
  • Exceptional 30,000-hour lifetime

🌱 Microgreens
🌱 Leafy greens
🌱 Herbs
🌱 Flowers
🌱 Vegetables
🌱 Tropical plants
🌱 Carnivorous plants
🌱 Hemp
🌱 Cannabis

4x 25W T5 HO Ballast Bypass 4FT LED Grow Lamps
1x Lamp installation guide
2x Fixture modification stickers

This ballast bypass LED grow lamp works with existing T5 fluorescent light fixtures by bypassing the ballast and wiring the lamp holders (tombstones) to a single end. Without the need for a ballast, these universal voltage 120-277V lamps do not flicker, buzz or experience longevity issues. *Requires bypassing the ballast during installation. Requires non-shunted lamp holders (tombstones). Please refer to the T5 LED GROW LIGHT BYPASS BALLAST INSTRUCTIONS VIDEO for detailed installation steps.

Free ground shipping on all orders over $200 in the continental US. Free ground shipping on all orders over $350 in HI, AK and Canada (BC, MB, NB, AB, ON and SK only). Products ship within 1-2 business days from date of purchase.

Active Grow proudly participates in the 1% for the Planet® program and donates 1% of all annual sales to organizations that promote sustainable agricultural practices.  

Better Light Spectrums = Better Plant Growth

Research engineered light recipes for your plant type & growth stage
Sun White Spectrum

This all-natural light spectrum boosts healthy growth rates for house plants, microgreens, flowers, fruits and more. By mimicking sunlight conditions with a high CRI of 95, the Sun White Spectrum will make your garden look more vivid and it will be easier to detect pests and deficiencies before they spread. This truly full-spectrum light extends beyond the traditional PAR range (400-700 nm) to include far-red wavelengths that increase photosynthesis rates via the Emerson Effect.

Featured Review

Robin from Cascadia Greens joins us to see how our Active Grow T5 HO LED Grow Lamps perform in an indoor hydroponic rack grow light spectrum test for Basil, Shiso, Sorrel & Edible Flowers.

Watch now

Bypass the Hassle
This ballast bypass LED grow lamp works with existing T5 fluorescent light fixtures by bypassing the ballast and wiring the lamp holders (tombstones) to a single end. Without the need for a ballast, these universal voltage 120-277V lamps do not flicker, buzz or experience longevity issues. *Requires bypassing the ballast during installation. Requires non-shunted lamp holders (tombstones). Please refer to the T5 LED GROW LIGHT BYPASS BALLAST INSTRUCTIONS VIDEO below for detailed installation steps.

Sustainable Horticultural Lighting
Replaces 54W T5 HO 4FT fluorescent lamps. Uses 60% less energy, greatly reducing heat output, HVAC costs and the need for more vertical space.

Plant Centric Design
Designed specifically for horticulture use with a 100% more effective spectrum for plant growth and a high PBAR (280-800nm) output and efficacy.

Shatterproof Design
The lamp’s transparent PC body protects against water damage and shattering without sacrificing photon output.

Long Lifetime & Guarantee
Features an exceptional 30,000-hour lifetime and a 3-year warranty. Active Grow is locally based in Seattle, WA providing same day response and friendly support.

Certified Safe
All lamp components and manufacturing processes meet the highest industry safety standards.

Rebates Available
This LED retrofit solution may be eligible to receive large utility rebates for commercial projects. Contact us to learn more.

Specifications
  • Model number: AG/25T5HOBB/4FT/WS
  • Base: G5
  • Power: 25 watts
  • Input voltage: 120-277V 50-60Hz
  • Ballast compatible: No
  • Rated power factor: >95%
  • PPF output (400-700 nm): 53 µmol/s
  • PBAR output (280-800 nm): 57 µmol/s
  • PPF efficacy: 2.12 µmol/J
  • PBAR efficacy: 2.28 µmol/J
  • Spectrum: Sun White Spectrum
  • CRI: 95 (typical)
  • Dimensions: 45.63"x0.75"x0.75" (1159x19x19mm)
  • Weight: 0.40 lbs (181 g)
  • Dimmable: No
  • Lifetime: 30,000 hours
  • Warranty: 3 years
View spec sheet

T5 LED Grow Light Ballast Bypass Instructions

Follow along and learn how to easily bypass a standard T5 fixture’s ballast.

Watch now
T5 LED Grow Lamps VS Fluorescent Tubes - Know Before You Grow

Upgrading to T5 LED grow lamps from T5 fluorescents offers numerous benefits for plant growth and cost savings. With a longer lifespan and dedicated horticultural spectrums, LED lamps are more energy efficient, emit less heat and are environmentally friendly.

Grow Light Intro

Learn about the T5 HO 2.0 LED Grow Light. The all-PC body provides growers with a lightweight (5.6 lbs), low-profile (1.7”) and high-performance LED fixture with 10% higher PPFD output than the previous generation.

Grower Product Review

Amelia from Amelia's Indoor Garden reviews the Active Grow T5 HO 4FT 8 Lamp LED Grow Light for growing vegetables indoors.

Grower Product Review

Amelia from Amelia’s Indoor Garden gives a 6-week update on using Active Grow T5 HO LED Grow Lamps for growing vegetables indoors.

Customer Reviews

Based on 24 reviews
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William S. (Seattle, US)

I’ve been using your LED’s for about 3-4 years now and I am real happy with their performance/watt. I am able to produce some chunky colas from the canopy, uncommon under such a low watt light fixture. Taylor knew there was a huge demand for high performing T5’s while being discrete, and he delivered. These 120 watt T5’s pack a punch and get the job done while barely denting the pocketbook. These lights excel in a limiting environment such as a bedroom closet. A must have for all home-hobby growers.

Judge.me YouTube video placeholder
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Tumbleweed Mushrooms & Microgreens @tumbleweedmushrooms (Seattle, US)

Active Grow LED lights are killing it

M
Mark Hedley

Love these light fixtures and bulbs. Recently converted from a ballast based fixture due to a failed ballast. Active Grow honored the warranty and we converted to the new ballast bypass bulbs. The conversion was pretty simple and our fixtures are back in production. We grow lettuces in a ZipGrow hydroponic system (hanging light fixtures vertically in front) and our microgreens. Awesome response from our plants. These bulbs are amazing. Definitely worth the investment - especially with a company that honors their warranties and has fantastic customer service!

M
Mekchone Khiamdavanh

Plants already took positive changes going from fluorescent to led..worth the investment

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Alison R.

My micros are essentially self growing and super tasty. We live in remote Alaska and it is a relief to find lights that can give us fresh produce without spiking our power bill.

A
Alan Aexander

I ha e now replaced all of my T2 florescent bulbs with your sun white LED lamps in my orchid room. My orchids are responding very well with a flush of new growths and blooms. And, my electric bill shows a substantial savings.

A
Alan Alexander

I bought these to replace T5 fluorescent tubes used for growing orchids. The conversion of my fixtures seemed daunting at first, but is actually very easy. I have been using them for over a month, and my plants are thriving and blooming well. I have calculated that these will pay for themselves in electrical cost in a little over 3 yrs.

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Amelia

Grow vegetables indoors all year from seed to harvest using Active Grow sunlamps. I started out with the Active Grow SunWhite 8 lamp T5 fixture. My tomatoes, peppers, and cucumbers did so well that I decided to convert all my T8 fluorescent fixtures into ballast free to use T8 Active Grow SunWhite bulbs too (T8 review starts at 2:23). I have harvested so many awesome tasting vegetables. My lettuces did phenomenal under these grow lights. The hardiness and texture were way better than when I was using full spectrum fluorescent. Check out my YouTube videos at Amelia's Indoor Garden. To top it off they are located here in the US with excellent customer service. They truly have a passion for their product.

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