SKU: 44218742037
4ft t5 grow light bulbs

4ft t5 grow light bulbs Active Grow 25W T5 HO Ballast Bypass 4FT Horticultural Lamp – Vinehydroponics

Sale price$21.22 Regular price$23.58
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Description

4ft t5 grow light bulbs Active Grow 25W T5 HO Ballast Bypass 4FT Horticultural Lamp – VinehydroponicsActive Grow 25W T5 HO Ballast Bypass 4FT Horticultural Lamp Overview The Active Grow 25W T5 High Output Ballast Bypass 4FT lamp is an LED tube that replaces 54W T5 HO 4FT fluorescent lamps and features lower power consumption, double the PPF efficiency and 100% more effective spectrums for plant growth. All Active Grow T5 HO Ballast Bypass LED tubes work with existing T5 fluorescent light fixtures by bypassing the ballast and wiring the lamp holders

Active Grow 25W T5 HO Ballast Bypass 4FT Horticultural Lamp

 Overview 

The Active Grow 25W T5 High-Output Ballast Bypass 4FT lamp is an LED tube that replaces 54W T5 HO 4FT fluorescent lamps and features lower power consumption, double the PPF efficiency and 100% more effective spectrums for plant growth.

All Active Grow T5 HO Ballast Bypass LED tubes work 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 lamps (120-277V) do not flicker, buzz or experience longevity issues. All Active Grow T5 HO Ballast Bypass lamps feature a transparent PC body that protects against water damage and shattering without sacrificing photon output. T5 fixtures require non-shunted lamp holders. Lamps are non-dimmable.

Description

Energy Saving

The Active Grow T5 High-Output 4FT LED Horticultural Lamp uses 50% less energy than fluorescent lamps and operates directly with the existing fixture’s electronic ballast

ClearSync Film Technology

All Active Grow T5 HO lamps now feature ClearSync film technology that improves water-resistance and prevents glass shattering without sacrificing photon output

Sun White / Sun White Pro / Spring Sun / Autumn Sun / Bright White / Red Bloom / Red Bloom Pro Spectrum

Choose between a wide array of spectrums designed specifically for horticulture use or mix and match spectrums to dial in the perfect light combination for your plant and application

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 meet the highest industry safety standards

Typical Applications

Commercial or home vertical farm racking systems for vegetables, leafy greens, ornamentals, microgreens, cannabis vegetative and cloning stages

Additional information

Shipping Quantity

4-Lamp Pack

Size

4FT

Installation Type

Ballast Bypass

Spectrum

Red Bloom Pro Spectrum

Form Factor

T5

Base Type

G5

Voltage

120-277V

Plant Light Requirement

Low-Medium Light, Medium Light, Medium-High Light, High Light

Plant Type

Cannabis, Flowers, Fruits, Herbs, Leafy Greens, Microgreens, Tissue Culture, Tropical Plants, Vegetables

 

 



Spectral Analysis

T5 HO Direct Conversion 4FT Horticultural Lamp Spectrums

 

Sun White Spectrum

High CRI 95 full-spectrum light accentuates plant colors, making visual inspection easier. Includes additional Red and Far-Red wavelengths to boost photosynthesis rates.

Sun White Pro Spectrum

Professional grade production spectrum formulated to promote healthy vegetative growth, root development, tight internodal spacing and phytochemical production.

Spring Sun Spectrum

Full-spectrum light (CRI 95) formulated to mimic spring sun conditions for promoting plant compactness, tighter internodal spacing and healthy foliage development.

Autumn Sun Spectrum

Full-spectrum light (CRI 95) formulated to mimic natural autumn sun conditions for promoting healthy growth during flowering, budding and fruiting stages.

Bright White Spectrum

Designed for maximum PAR (400-700 nm) efficacy, this full-spectrum light is formulated for high light intensity requirement plants during the vegetative stage.

Red Bloom Spectrum

Far-Red wavelengths boost light absorption, speed up plant growth and combine with Blue wavelengths to promote root development, budding and fruiting.

Red Bloom Pro Spectrum

True full-spectrum light designed to increase plant mass, speed up growth and promote healthy root development, budding and fruiting in purely indoor environments.

 

 

 

 

 

Ballast Compatibility List

Ballast Compatibility List

The T5 HO 4FT LED lamp is compatible with Instant Start and Programmed Start ballasts of T5 HO fluorescent lamp fixtures. Not compatible with daisy-chainable single unit T5 fixtures, for example: Jump Start JST54. Active Grow T5 Horticultural Fixtures (120V) available.

Active-Grow-T5-HO-4FT-Ballast-Compatibility-List


T5 HO LED Vs. T5 HO Fluorescent

Active Grow T5 HO LED Grow Lights Vs. T5 HO Fluorescent Tubes – Energy, Spectrum & PPFD

These tests were taken to compare Active Grow 24W T5 HO 4FT LED Horticultural Lamps and 54W T5 HO 4FT fluorescent lamps in an 8 tube T5 HO fixture. The test focuses on three main areas: Energy Consumption, Spectral Analysis & PPFD Coverage.

Download PDF


T5 HO Fixture Electronic Ballast Replacement Instructions

How to switch out your old T5 HO fixture ballast for a new one that works with Active Grow T5 HO Horticultural Lamps

Why would you change out your T5 HO ballasts?

  1. Ballasts don’t last forever (10-15K hours for a good one) so in order to keep using your existing fixture you can just purchase a new replacement ballast that is cheaper than a new fixture.
  2. In order to use new T5 HO LED lamps that require electronic ballasts to run. To check what ballasts are compatible with Active Grow T5 HO Horticultural Lamps please click the link here.

What you need for the installation:
1: T5 HO Fixture
2: T5 HO Lamps
3: Twist on wire connectors
4: Screwdriver
5: Wire trimmer / cutter
6: New replacement ballast

*NOTICE* NOT ALL T5 HO BALLASTS AND FIXTURES ARE THE SAME SO BEFORE INSTALLATION MAKE SURE YOU REMOVE THE REFLECTOR TO CHECK WHAT TYPE OF BALLASTS WORK WITH YOUR FIXTURE AS BALLASTS ALSO COME IN DIFFERENT SIZES. MOST BALLAST REPLACEMENTS ARE AVAILABLE ON AMAZON FOR LESS MONEY THAN A WHOLE NEW FIXTURE.

*NOTICE* IF YOU HAVE A T5 HO FIXTURE WITH 2 OR MORE BALLASTS INSIDE THE SAME INSTALLATION RULES APPLY.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 44218742037

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chase guerlain
Bozeman, US
★★★★★ 5
Heavy gauge battery cable
Size: 10 FT, Style: 0 (1/0) AWG RED
Heavy duty works good
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Reviewed in the United States on March 11, 2026
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jeff
San Leandro, US
★★★★★ 5
Great product
Size: 5 FT, Style: 0 (1/0) AWG RED
Good quality cable.
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Reviewed in the United States on February 1, 2026
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Astrid Falcon
Grantham, US
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
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Reviewed in the United States on March 24, 2025
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Dr.Ortiz Ayala
Carnegie, US
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
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Reviewed in the United States on August 18, 2025
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JOHN A.
Boise, US
★★★★★ 5
Heavy Duty!!
Performed extremely well. No buzzzing or poor connection. Extremely well built and has been working issue free for over 6 months! Instalation can be a bit difficult due to size and weight. Not really a problem.
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Reviewed in the United States on November 25, 2024

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