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Side view of white GrowPros Solutions Viper under canopy LED light, with black end caps and a connector.
Two silver GrowPros Solutions Viper LED grow light bars, with a yellow connector, shown connecting for a 4-8ft setup.
GrowPros Solutions Viper 8ft under canopy LED grow light, two silver bars with red & white LEDs, connected by a black bracket.
GrowPros Solutions Viper 4 ft LED under canopy grow light on adjustable black stands, white with black and gold accents.
GrowPros Solutions Viper Under Canopy Light. Long white LED grow light fixture with black end caps and connectors.
GrowPros SOLUTIONS Viper 4ft LED under canopy grow light, silver/black, on two adjustable stands.
White GrowPros Solutions Viper Under Canopy LED grow light, 8ft, on adjustable dark grey floor stands.
Close-up of two parallel LED grow light bars with silver housing, illuminated red and white LEDs, connected by a black bracket.
Side view of white GrowPros Solutions Viper under canopy LED light, with black end caps and a connector.
Two silver GrowPros Solutions Viper LED grow light bars, with a yellow connector, shown connecting for a 4-8ft setup.
GrowPros Solutions Viper 8ft under canopy LED grow light, two silver bars with red & white LEDs, connected by a black bracket.
GrowPros Solutions Viper 4 ft LED under canopy grow light on adjustable black stands, white with black and gold accents.
GrowPros Solutions Viper Under Canopy Light. Long white LED grow light fixture with black end caps and connectors.
GrowPros SOLUTIONS Viper 4ft LED under canopy grow light, silver/black, on two adjustable stands.
White GrowPros Solutions Viper Under Canopy LED grow light, 8ft, on adjustable dark grey floor stands.
Close-up of two parallel LED grow light bars with silver housing, illuminated red and white LEDs, connected by a black bracket.

GrowPros Solutions Viper Model 4 Under Canopy Deep Red LED Grow Light - 2 Pack

Official GrowPros Solutions Dealer Model: GPS-UCL4-4FT-IR
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Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • Up to 300W total output per 8ft pair for intense lower canopy penetration
  • Independent 730nm infrared channel triggers the Emerson Effect for faster flowering
  • IP65 waterproof rating allows for safe operation in high-humidity commercial environments
  • 5-year limited warranty on all fixtures, covering manufacturing defects in materials and workmanship
  • View More Details

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REBATE PROGRAM

Commercial Rebate Program

Licensed operations may qualify for up to a 60% rebate on qualifying equipment.

Rebate & Commercial Inquiry

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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are adding under-canopy lighting because your lower branches produce airy biomass that is not worth harvesting.
  • You are upgrading to a dual-channel setup because your current flowering transition takes too long and stalls cycles.
  • You are investing in supplemental red light because top-down fixtures cannot reach the bottom third of your canopy.

What We Found

  • We found the separate 730nm channel is the real winner here for timing your flowering transitions exactly.
  • You will want the inter-connect cables right away if you plan to run these in a series to avoid a mess of cords.

What Users Say

  • Users who added these to their existing rows say they completely eliminated the airy plant material at the bottom.
  • Facilities using the IR channel report finishing their flower cycles up to two weeks earlier than their old setups.

GrowPros Solutions Viper Model 4 Under Canopy Deep Red LED Grow Light - 2 Pack

Struggling with underdeveloped lower buds and slow flowering transitions? The GrowPros Solutions Viper Under Canopy Light Model 4 Dual Channel is the commercial-grade solution designed to eliminate "larf" and accelerate your harvest cycle by up to 2 weeks. By targeting the areas your top-down lights can't reach, this system ensures every part of your plant produces premium, harvestable flower.

This revolutionary lighting solution features a strategic dual-channel spectrum configuration. The primary channel delivers a Full Spectrum + Red + White mix for optimal flower development, while a dedicated, independent Infrared (730nm) channel triggers the Emerson Effect. This allows growers to stimulate a faster hormone switch at the beginning of the dark cycle, leading to earlier harvests and increased annual production cycles. Note: An inter-connect cable (sold separately) is required to daisy-chain multiple units.

Features

GrowPros Solutions Viper Model 4 Emerson Effect Technology
Emerson Effect Technology

Independent 730nm infrared channel triggers accelerated hormone switches, reducing flowering transition time by 1-2 weeks for faster harvests.

GrowPros Solutions Viper Model 4 Yield Enhancement
50% Yield Enhancement

Eliminates C-grade buds while dramatically increasing the size and potency of A and B buds with optimized spectrum delivery.

GrowPros Solutions Viper Model 4 Light Penetration
Enhanced Light Penetration

Strategic combination of main spectrum and infrared wavelengths delivers superior penetration throughout the entire canopy profile.

GrowPros Solutions Viper Model 4 Accelerated ROI
Accelerated ROI

Combined benefits of higher yields and faster harvests deliver exceptional return on investment for commercial cultivation operations.

Specifications

Specification Value
Total Wattage 150W (4ft Model) / 300W (8ft Model)
Channel Distribution 4ft: 125W Main, 25W IR | 8ft: 250W Main, 50W IR
Spectrum Red + White Full Spectrum + 730nm Infrared
Input Power 120V-277V / 50/60Hz
Lifespan L90: >36,000 Hours
IP Rating IP65 Waterproof
Thermal Management Passive Cooling
Controller Compatibility Compatible with most RJ12 controllers

Spectrum

The Viper Model 4 runs a dual-channel output combining a full spectrum red and white primary channel with an independent 730nm infrared channel. The main channel drives flower development throughout the lower canopy, while the dedicated IR channel triggers the Emerson Effect — accelerating the hormonal shift at the start of the dark cycle to shorten the flowering transition by up to 2 weeks.

GrowPros Solutions Viper Model 4 Under Canopy Deep Red LED Spectrum Chart

Warranty

GrowPros Solutions provides a 5-year limited warranty on all Viper Under Canopy Light Model 4 Dual Channel fixtures, covering manufacturing defects in materials and workmanship under normal use conditions.

FAQs

What is the Emerson Effect?+

The Emerson Effect is a physiological response in plants where the rate of photosynthesis increases significantly when exposed to both long-wave red (Infrared) and shorter-wave red light. The Viper Model 4 uses a dedicated 730nm channel to trigger this, shortening the vegetative-to-flowering transition by up to 2 weeks.

Can I daisy chain these lights?+

Yes, you can daisy chain multiple units using the Growpros Solutions Inter-connect Cable. This allows you to power and control multiple fixtures from a single source for cleaner cable management.

Do I need special stands for installation?+

We recommend using the Under Canopy Light Stands to ensure your fixtures are positioned at the optimal height to reach the lower canopy without obstructing airflow or maintenance.

Is the infrared channel independent?+

Yes, the Viper Model 4 features a dual-channel design. When used with a compatible controller like the GrowPros Environment Controller, you can manage the main spectrum and the infrared channel on separate schedules for maximum plant manipulation.

What power cord options are available?+

These lights are compatible with various power setups. You can choose from 240V power cords or standard 120V options to match your facility's electrical infrastructure.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

Why Trimleaf

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