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GrowPros Solutions Under Canopy 125 / 250 Watt Grow Light Full Spectrum + Far Red

GrowPros Solutions Under Canopy 125 / 250 Watt Grow Light Full Spectrum + Far Red

SKU: GPS-UCL1-4FT

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The GrowPros Solutions Under Canopy Grow Light (4 ft R60) is a specialized horticultural lighting fixture designed to illuminate the lower canopy of plants where traditional top lights cannot reach. By delivering targeted light beneath dense plant foliage, this interlighting solution enhances the development of shaded leaves and lower buds, helping growers achieve more uniform plant growth and higher overall yields.

Engineered with an optimized full-spectrum output enhanced by deep red and far-red wavelengths, the fixture supports photosynthesis throughout the entire plant—from the top canopy down to lower bud sites. This balanced spectrum promotes improved flower density, color, and overall crop quality, making it suitable for both vegetative and flowering stages of growth.

Each 4-foot light bar operates at 125 watts and delivers approximately 325 µmol/s of PPF, providing strong light intensity in areas that are typically shaded. The system uses high-quality diodes, including white LEDs (around 4000K), 660 nm red LEDs, and far-red diodes, ensuring efficient light distribution and enhanced plant performance.

The slim single-bar design with a 120° lens angle ensures even light spread across the lower canopy while remaining compact and easy to install between plant rows or trellis layers. Its built-in driver, lightweight construction, and IP65-rated housing make the fixture durable and easy to maintain in humid grow environments.

Designed for commercial cultivation, the under-canopy lighting system supports power and data daisy-chaining, allowing multiple fixtures to be connected efficiently across large grow spaces. It is compatible with 120–277V power inputs and external lighting controllers, giving growers the ability to automate lighting schedules and optimize plant growth conditions.


Key Features

  • Full spectrum lighting with deep red and far-red wavelengths for enhanced plant growth

  • 4 ft (48") LED bar design ideal for under-canopy or interlighting applications

  • 125W power output per bar with ~325 µmol/s PPF for strong light penetration

  • Improves development of lower buds and shaded leaves for more uniform harvest

  • Boosts flower density, color, and overall crop quality

  • 120° lens angle for wide, even light distribution

  • Slim, lightweight design with built-in driver for easy installation

  • IP65 waterproof rating for durability in humid grow environments

  • Power and data daisy-chain capability for scalable grow setups

  • Suitable for indoor cultivation, greenhouse benches, and vertical farming systems

Is the Under Canopy Light Worth It?

The GrowPros Under Canopy Grow Light is designed for targeted lower canopy illumination, combining full-spectrum lighting with far red to enhance plant development beneath dense foliage. With 125W (4ft) and 250W (8ft) options, it delivers consistent light output, improved penetration, and energy-efficient performance. Built for durability and effective heat management, it supports better photosynthesis in shaded areas, helping growers achieve healthier plants, improved bud development, and more uniform yields in professional grow environments.

Features & Benefits

Specifications

What is included?

Warranty & Returns

Features

Enhance Under Canopy Light Efficiency

Designed for professional growers, the GrowPros Under Canopy Grow Light delivers full-spectrum output with far red to improve lower plant response. With two selectable power 125W (4ft) and 250W (8ft) options, it provides targeted light penetration, even under-canopy coverage, and efficient performance. Built for durability and reliability, it supports improved plant development, enhanced bud formation, and consistent yields in both commercial and advanced indoor grow environments.

Uniform Light Spread

Durable Construction

Full Spectrum Output

Dual Power Options

High Efficiency Output

Low Heat Operation

Benefits of LED Grow Lights

LED grow lights offer numerous benefits for plant cultivation. They are energy-efficient, customizable in spectrum, emit minimal heat, and have a long lifespan. These qualities reduce costs, enhance growth, and promote environmentally friendly and low-maintenance cultivation practices.

Instant On/Off

It allows precise control over light cycles.

Full Spectrum Lighting

This promotes healthier and more robust plant growth.

Low Heat Emission

This reduces the risk of heat stress and saves them from damaging

Easy Installation

LED grow lights require less maintenance, saving you time and effort.

Optimized Light Output

Allows you to adjust the light spectrum to suit different plant types and growth stages

Power Saver

LED grow lights save energy, costs, and promote sustainable cultivation.

Durable Design

Constructed with top-quality materials, ensuring prolonged use in various conditions.

Consistent Output

Engineered for sustained performance, guaranteeing optimal light output over time.

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Why GrowPros Solutions?

GrowPros Solutions stands out for delivering high-performance cultivation equipment designed by experienced growers. With over 25 years of industry knowledge, the company focuses on innovation, efficiency, and affordability, helping growers maximize yields and plant quality. Their in-house manufacturing enables faster product development and reliable performance. By offering advanced lighting technologies and practical solutions, GrowPros supports both commercial and small-scale cultivators in achieving consistent, high-quality results.

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Spectrum Matters

The GrowPros Under Canopy Grow Light delivers full-spectrum lighting with far red in a targeted design to support plants beneath dense canopy areas. Its slim bar layout ensures even light distribution across lower plant zones, improving photosynthesis and bud development. With energy-efficient performance and optimized spectrum output, it promotes healthier growth, enhanced flowering, and consistent yields for both commercial operations and indoor cultivation environments.

Optimized Under Canopy Output

Designed to support lower plant zones with full-spectrum lighting plus far red for improved development beneath dense canopy areas.

Even Light Distribution

Slim bar LED structure delivers uniform light spread, reducing shadows and promoting consistent, healthy lower plant growth.

Selectable Power Options

Two 125W (4ft) and 250W (8ft) options, providing efficient output with reliable performance for consistent results.

Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I’ll definitely order from them again
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we’re starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.


Why Thousands of Growers Choose to Work Exclusively with Greenhouse with plants

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FAQ Section

What is an under canopy grow light used for?
It is designed to provide targeted lighting beneath the plant canopy, improving light penetration to lower leaves and buds.
What spectrum does this light provide?
It delivers full-spectrum lighting with added far red to enhance plant development and flowering performance.
How does it improve plant growth?
By lighting shaded areas, it enhances photosynthesis, promotes better bud development, and increases overall yield quality.
Is it suitable for all growth stages?
Yes, it supports both vegetative and flowering stages, especially improving lower canopy performance.
How is it installed in a grow setup?
It is typically mounted horizontally beneath the canopy using simple mounting or hanging systems.
Does it produce a lot of heat?
No, it features a low-heat LED design that minimizes temperature impact around plant bases.

Specifications

SPECS & DIMENSIONS

Dimensions 47.5 x 2.9 x 3.2 inches (4ft) / 92.5 x 2.9 x 3.2 inches (8ft)

BUILD & LIGHT SYSTEM

Voltage Compatibility

  • Operates on 120–277V systems, ensuring stable and reliable performance across indoor grow environments.

LED Bar Design

  • Slim bar-style full-spectrum layout with far red delivers targeted output and even lower canopy coverage.

Driver Integration

  • Integrated high-quality driver provides efficient power delivery and dependable long-term operation.

Fixture Features

Light Intensity Control

  • Built-in dimming capability allows precise adjustment for optimized under-canopy lighting conditions.
Brand GrowPros Solutions
4ft Under Canopy Specs
Wattage 125W
Input Voltage 120V-277V
Lifetime Testing L90: >36,000 hrs
Power Factor >0.9
Thermal Management Passive
Working Temperature 0ºF to 104ºF
Spectrum Full Spectrum + Far Red
IP RATING IP65
PPF 350 μmol/s
PPE 2.92 μmol/J
AMPS @ 120V – 1.04A
208V – 0.60A
240V – 0.52A
277V – 0.45A
Daisy chain option 8 pcs @ 120V
13 pcs @ 208V
15 pcs @ 240V
18 pcs @ 277V
SpecSheet PDF
8ft Under Canopy Specs
Wattage 250W
Input Voltage 120V-277V
Lifetime Testing L90: >36,000 hrs
Power Factor >0.9
Thermal Management Passive
Working Temperature 0ºF to 104ºF
Spectrum Full Spectrum + Far Red
IP RATING IP65
PPF 650 μmol/s
PPE 2.89 μmol/J
AMPS @ 120V – 2.08A
208V – 1.20A
240V – 1.04A
277V – 0.90A
Daisy chain option 4 pcs @ 120V
5 pcs @ 208V
6 pcs @ 240V
8 pcs @ 277V
SpecSheet PDF

What is Included?

What’s in the box.

  • 1 x UnderCanopy Grow Light

Warranty Policy

It's recommended to contact GrowPros Solutions for specific warranty information related to their LED grow lights. Please note that warranty details may vary depending on the product model, purchase location, and other factors.

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