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GrowPros Solutions Under Canopy 125 / 250 Watt Grow Light 80% Deep Red Spectrum

GrowPros Solutions Under Canopy 125 / 250 Watt Grow Light 80% Deep Red Spectrum

SKU: GPS-UCL2-4FT-RED

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The GrowPros Solutions Under Canopy Grow Light R80 (4 ft) is a specialized interlighting fixture designed to deliver powerful illumination to the lower canopy of dense plant structures. Installed beneath the plant canopy, this light ensures that shaded leaves and lower bud sites receive the photons needed for healthy development, resulting in more uniform plant growth, improved flower density, and increased overall yield.

Engineered with a high-intensity spectrum containing approximately 80% 660 nm deep-red light, the fixture is optimized for flowering performance and canopy penetration. The spectrum is complemented with a refined blend of blue, warm white (around 3000K–4000K), and 730 nm far-red wavelengths, helping enhance photosynthesis, improve bud formation, and support balanced plant growth throughout the canopy layers.

Each 4-foot light bar operates at approximately 125 watts and produces up to about 325–350 µmol/s of PPF, delivering strong light intensity directly to areas that are typically underlit in traditional top-lighting setups. This targeted lighting strategy helps stimulate lower flower sites, boost terpene and resin production, and increase harvest quality.

The fixture features a slim single-bar aluminum design with a 120° lens angle, providing wide and even light distribution across the lower canopy while remaining compact and easy to install between plant rows or grow benches. Built with IP65 waterproof protection, passive cooling, and a built-in driver, the light is engineered to operate reliably in humid indoor cultivation environments.

Designed for professional cultivation, the system supports 0–10V dimming and RJ12 controller connectivity, allowing growers to automate lighting intensity and integrate multiple fixtures through power and data daisy-chain connections for large-scale grow facilities.


Key Features

  • 80% 660 nm deep-red spectrum optimized for flowering and bud development

  • 4 ft (48") interlighting LED bar designed for under-canopy installation

  • 125W power output with up to ~325–350 µmol/s PPF for strong lower-canopy illumination

  • Enhanced flowering and bud density by lighting shaded plant areas

  • Spectrum blend of deep red, blue, white, and far-red wavelengths for balanced plant development

  • 120° wide beam angle for even light spread across lower canopy

  • 0–10V dimming and RJ12 controller compatibility for automated control

  • Power and data daisy-chain capability for scalable installations

  • IP65 waterproof rating and passive cooling for durability in humid grow environments

  • Ideal for commercial indoor cultivation, vertical farming, and high-density grow setups

Is the Red Spectrum Light Worth It?

The GrowPros Under Canopy Grow Light is designed for targeted lower canopy illumination, delivering 80% deep red spectrum to enhance flowering and bud development beneath dense foliage. With 125W (4ft) and 250W (8ft) options, it provides consistent light output, improved penetration, and energy-efficient performance. Built for durability and effective heat management, it supports better light absorption in shaded areas, helping growers achieve stronger flowering, improved bud quality, and more uniform yields in professional grow environments.

Features & Benefits

Specifications

What is included?

Warranty & Returns

Features

Enhance Targeted Flowering Light Efficiency

Designed for professional growers, the GrowPros Under Canopy Grow Light delivers 80% deep red spectrum output for improved flowering response beneath dense canopies. With two power 125W (4ft) and 250W (8ft) options, it provides strong light penetration, focused under-canopy coverage, and efficient performance. Built for durability and reliability, it supports enhanced bud development, improved flowering results, and consistent yields in both commercial and advanced indoor grow environments.

Dual Power Options

Slim Bar Profile

Deep Red Spectrum

Durable Build Quality

Uniform Light Spread

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 80% deep red spectrum lighting in a targeted design to support plants beneath dense canopy areas during flowering. Its slim bar layout ensures even light distribution across lower plant zones, improving light absorption and bud development. With energy-efficient performance and focused spectrum output, it promotes enhanced flowering, improved bud quality, and consistent yields for both commercial operations and indoor cultivation environments.

Focused Deep Red Output

Designed to support flowering stages with 80% deep red spectrum lighting for enhanced bud development and improved plant response.

Uniform Under Canopy Coverage

Slim bar LED structure delivers even light distribution, reducing shadows and promoting consistent lower plant growth.

Selectable Power Options

Two power 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 spectrum does this grow light use?
It delivers 80% deep red spectrum, specifically designed to enhance flowering and bud development.
What is this light mainly used for?
It is used for under-canopy lighting to improve light exposure in shaded lower plant areas.
How does deep red light benefit plants?
Deep red wavelengths stimulate flowering, improve bud formation, and increase overall yield quality.
Is it suitable for all growth stages?
It is primarily optimized for the flowering stage rather than early vegetative growth.
How is the light installed in a grow setup?
It is mounted beneath the canopy using simple brackets or hanging systems.
Does it generate a lot of heat?
No, it features a low-heat LED design that minimizes temperature 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 growing environments.

LED Bar Design

  • Slim bar-style layout with 80% deep red spectrum delivers focused output and even under-canopy coverage.

Driver System

  • 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 flowering and lower canopy lighting.
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 80% Deep Red + Full Spectrum
IP RATING IP65
PPF 350 μmol/s
PPE 3.01 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 80% Deep Red + Full Spectrum
IP RATING IP65
PPF 350 μmol/s
PPE 3.03 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 Under Canopy 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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