Skip to content
GrowPros Solutions VIPER 150 / 300 Watt Under Canopy Grow Light 80%Red + White | Far Red (730nm)

GrowPros Solutions VIPER 150 / 300 Watt Under Canopy Grow Light 80%Red + White | Far Red (730nm)

SKU: GPS-UCL4-4FT-IR

Official Distributor

$179.95
Preview Icon

Or

Monthly payments start at:

$4.99/mo

Check Icon

Monthly Payment Start at:

$4.99/mo

Contact us about commercial pricing
Light Size
Stand Option

Notify me when back in stock

Free Shipping

On most orders

Call Us

(833) 416-0375

Mon-Fri 9am-6pm CST

Lowest Price Guranteed

There is never a better price,

we can always price match

No Sales Tax

Absolutely no tax on any purchase

Easy Returns

Always hassle free

Free Shipping

Lowest Price Gurantee

No Sales Tax

Easy Returns

The GrowPros Solutions VIPER Under Canopy Light is a high-performance dual-channel interlighting system designed to illuminate the lower canopy of plants where top lighting often cannot reach. By delivering targeted light beneath dense foliage, the VIPER helps improve development of shaded leaves and lower buds, leading to more uniform plant growth, higher yields, and better overall crop quality.

This advanced under-canopy lighting fixture features two independently controllable spectrum channels optimized for flowering performance. Channel 1 delivers approximately 80% red spectrum combined with white light, while Channel 2 provides 730 nm far-red light, a combination designed to enhance photosynthesis and improve flowering response. When deep red and far-red light work together, they can trigger the Emerson Effect, which increases photosynthetic efficiency and encourages faster flowering and stronger bud development.

The VIPER series is available in two sizes to suit different cultivation setups. The 4-foot model operates at around 150W, delivering strong photon output for single bench rows and compact grow spaces. For larger installations, the 8-foot model provides approximately 300W, offering wider canopy coverage and deeper light penetration across larger grow beds.

Designed for commercial cultivation environments, the fixture features a slim aluminum housing with built-in driver and passive cooling, ensuring quiet operation and minimal heat generation. Its IP65 waterproof rating protects the unit from moisture, irrigation spray, and dust, making it suitable for demanding indoor grow rooms and greenhouse environments.

The VIPER under-canopy light also supports 0–10V dimming and RJ12 controller compatibility, allowing growers to integrate it with lighting control systems for automated scheduling and spectrum adjustments. With power and data daisy-chain capability, multiple fixtures can be connected efficiently for large-scale cultivation setups.


Key Features

  • Dual-channel spectrum system optimized for flowering

  • Channel 1: 80% Red + White spectrum

  • Channel 2: Far Red (730 nm) for enhanced flowering response

  • Available lengths: 4 ft (150W) and 8 ft (300W) models

  • Designed to improve lower canopy bud development and yield uniformity

  • Supports the Emerson Effect to increase photosynthetic efficiency

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

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

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

  • IP65 waterproof rating for durability in humid cultivation environments

  • Ideal for commercial indoor farms, hydroponics, vertical farming, and high-density grow rooms

Is the VIPER Under Canopy Light Worth It?

The GrowPros VIPER Under Canopy Grow Light is designed for targeted lower canopy illumination, delivering 80% red spectrum with white and far red (730nm) to enhance flowering and bud development beneath dense foliage. With two available power modes 150W (4ft) and 300W (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

Boost Targeted Under Canopy Lighting Efficiency

Designed for professional growers, the GrowPros VIPER Under Canopy Grow Light delivers 80% red spectrum with white and far red output for improved flowering response beneath dense canopies. With two available power modes 150W (4ft) and 300W (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.

Uniform Light Spread

Under Canopy Design

Red Dominant Spectrum - White Spectrum Support

Slim Bar Profile

Energy Efficient LEDs

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.

wetanddry

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.

wetanddry

Spectrum Matters

The GrowPros VIPER Under Canopy Grow Light delivers 80% red spectrum lighting with white and far red 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, enhancing light absorption and bud development. With energy-efficient performance and optimized spectrum output, it promotes stronger flowering, improved bud quality, and consistent yields for both commercial operations and indoor cultivation environments.

Targeted Red Spectrum Output

Designed to support flowering stages with 80% red spectrum plus white and far red for enhanced bud development and plant response.

Consistent Under Canopy Coverage

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

Fixed Wattage Models

Available in 150W or 300W versions for consistent, reliable performance.

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

Green Thumb Depot Logo

Them Green Thumb Depot Logo

icons-no Support
icons-no Nearly impossible to reach a real person. Endless chatbot loops, auto-replies, and unreturned emails.
icons-no Real humans. We answer quickly. Always here, always helpful
icons-no Order Processing
icons-no Orders often sit for days before being acknowledged. No clear confirmation, updates, or timelines.
icons-no Orders are processed immediately. You'll receive confirmation, tracking, and real-time updates within hours.
icons-no Shipping
icons-no Slow, vague, and unoptimized. Basic carriers, minimal tracking, and delayed delivery windows.
icons-no Fast, insured, and fully trackable shipping — optimized for speed and visibility every step of the way.
icons-no Pricing
icons-no Hidden fees, bait and switch tactics, post purchase price increases.
icons-no Our relationships guarantee the lowest prices. Transparent and fair. No surprises at checkout, and no shady tactics after the sale.
icons-no Returns & Warranty
icons-no Hidden fees, bait and switch tactics, post purchase price increases.
icons-no Clear, honest, and fast. Our return policy is built to protect your investment, not dodge responsibility.
icons-no Support
icons-no Frustrating automated responses
icons-no Fast, helpful and always supportive
icons-no Order Processing
icons-no Delays and lack of communication
icons-no Instant processing and updates
icons-no Shipping
icons-no Slow, unreliable and delayed service
icons-no Fast, insured, trackable shipping
icons-no Pricing
icons-no Deceptive pricing practices
icons-no Lowest prices, no surprises
icons-no Return & Warranty
icons-no Frustrating, misleading return policies
icons-no Clear, honest return policy

FAQ Section

What spectrum does the VIPER grow light use?
It uses an 80% red spectrum combined with white and far red (730nm) to enhance flowering and plant development.
What is this grow light mainly used for?
It is designed for under-canopy lighting to improve light penetration in lower plant areas.
How does far red light benefit plants?
Far red (730nm) helps promote flowering, improves plant stretching, and enhances overall plant response.
How is the light installed in a grow setup?
It is mounted beneath the canopy using brackets or hanging systems for targeted lower coverage.
Does it generate a lot of heat?
No, it features a low-heat LED design that minimizes temperature around plant bases.
Who should use this grow light?
It is ideal for commercial growers and indoor cultivators aiming to maximize flowering and yield quality.

Specifications

SPECS & DIMENSIONS

Dimensions 44.5" x 2.8" 3.7" (4ft) / 92" x 2.8" x 3.7" (8ft)

STRUCTURE & LIGHT MANAGEMENT

Input Voltage Range

  • Runs on 120–277V systems, providing stable and dependable operation across indoor cultivation environments.

LED Bar Layout

  • Slim bar-style layout with 80% red, white, and far red delivers targeted output and uniform under-canopy coverage.

Driver Integration

  • Integrated high-quality driver ensures efficient power distribution and reliable long-term performance.

Fixture Functions

Light Intensity Control

  • Built-in dimming function enables precise adjustment for optimized flowering and lower canopy lighting.
Brand GrowPros Solutions
4ft Under Canopy Specs
Wattage 150 W (125W / 25W)
Input Voltage 120V-277V
Lifetime Testing L90: >36,000 hrs
Power Factor >0.9
Thermal Management Passive
IP Rating IP65
Spectrum 1 80%Red + White
Spectrum 2 Far Red (730nm)
PPF 450 μmol/s
PPE 3.0 μmol/J
AMPS@ 120V – 1.27A
208V – 1.46A
220V – 0.68A
240V – 0.63A
277V – 0.53A
Daisy chain option 8pcs @120V
12pcs @208V
14pcs @220V
16pcs @240V
18pcs @277V
4ft SpecSheet PDF
8ft Under Canopy Specs
Wattage 300 W (250W / 50W)
Input Voltage 120V-277V
Lifetime Testing L90: >36,000 hrs
Power Factor >0.9
Thermal Management Passive
IP Rating IP65
Spectrum 1 80%Red + White
Spectrum 2 Far Red (730nm)
PPF 900 μmol/s
PPE 3.0 μmol/J
AMPS@ 120V – 2.54A
208V – 1.46A
220V – 1.37A
240V – 1.25A
277V – 1.07A
Daisy chain option 4pcs @120V
6pcs @208V
7pcs @220V
8pcs @240V
9pcs @277V
8ft SpecSheet PDF

What is Included?

What’s in the box.

  • 1 x LED Grow Light
  • 1 x User Manual for Installation

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.

>