Grow Pros 4' Under Canopy Light - Model 1 - Full Spectrum + 5% IR
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Product Details
Product Details
The Grow Pros Solutions 4′ under canopy grow lights are designed to provide supplemental light to the lower regions of plants in indoor cultivation environments by strategically placing them beneath the top canopy of plants to ensuring leaves and flowers below the canopy receive optimal light exposure by eliminating shady areas. Under Canopy Grow Lights benefits include uniform light distribution, maximizes yield and denser flower.
Features & Benefits
- DLC Listed, eligible for rebate program from utility companies. Contact us for details>>
- 4 ft ( 48″ ) 125w Light Bars 2 pcs with 8ft Power Cord 1pc
- Designed for enhancing plant growth and optimizing light availability to less exposed areas
- Deploys a lens angle of 120 degrees, from a singular bar design
- Built-in driver, slim profile
- Improve overall quality specially B-bud structure, density, and coloring
- Maximize yields with a 25%-40% improvement
- Utilizes deep and far red spectrum
- Optimized Infrared + full spectrum proven for veg and flowering stages
- Compact and lightweight, heavy duty components and quality
- Easy to work around during harvest
- Quick to uninstall between setting up and taking down runs
- Power and data chaining through same connections, no extra components required
- Accessories available: Under Canopy Grow Lights Stands, Inter-connect Cable, 120V Power Cord (L-15P) with attached RJ12 Data Cable, 240V commercial power cords
Illuminate Growth, Cultivate Brilliance: Grow Pros Solutions Under Canopy Light 4ft
Growpros Solutions’ under canopy light 4ft are engineered to enhance the yield and color of lower flowers. These supplemental lights effectively enlarge B-buds and C-buds, promoting better growth and development in areas that typically underperform. By targeting the understory, Growpros Solutions ensures a more uniform and abundant harvest, maximizing the potential of every plant.
Maximize Flowering and THC Concentration
Under canopy lights are designed to illuminate beneath the dense plant canopies where traditional overhead lights struggle to reach. This strategic lighting approach not only boosts the yield but also enhances the quality of your crops by:
Increasing Flowering: By providing essential light to lower canopy areas, these lights promote more extensive flowering even in the shaded parts of the plant.
Enhancing THC Concentration: The added light spectrum encourages the development of THC and terpene compounds, improving the potency and profile of your harvest.
Spectrum Balancing for Optimal Growth
To achieve these benefits, it’s crucial to select the right spectrum based on your existing setup:
- Model 1 Lights: Ideal for complementing HID top lights, which are rich in ROY (red, orange, yellow) spectrums.
- Model 2 Lights: Best paired with full spectrum LED top lights to ensure comprehensive coverage.
This customization allows growers to balance light spectrums effectively, ensuring that every plant receives the optimal wavelengths necessary for peak growth and quality. By integrating these advanced lighting solutions, you can achieve not only increased yields but also superior product quality, setting your harvest apart in both appearance and chemical composition.
A solution was needed when addressing the hindered development of lower buds and leaves on plants grown where limited lighting reaches beneath the top canopy. It was found that the strategic installation of under-canopy grow lights improves overall plant development.
The Grow Pros Solutions 125W under canopy light 4ft have been developed by assessing SMD (Surface Mount Device) chips and drivers from leading manufacturers in controlled test applications and cultivation facilities. It’s IR spectrum penetrate deep into the plant canopy, sparking life in lower regions of the canopy and nurturing robust growth from top to bottom.
How to Determine How Many Power Cords and Interconnect Cables to Order
One pair of 4' UCL's are designed to cover a 4' x 4' area. Each UCL has a short, flexible pigtail that allows you to daisy-chain multiple fixtures together (both power and data/dimming). So if you will be running multiple fixtures in a straight line and the fixtures will be very close to each other end-to-end, you would only need a single power cord and no extension cables.
Common configurations/examples:
- 4' x 4' space: this would require (1) pair of UCL's, (1) power cord and (1) interconnect cable, since the two fixtures will be spaced a couple of feet apart, which is longer than the pigtails on the fixtures themselves.
- 4' x 8' space: this would require (2) pair of UCL's, (1) power cord and (1) interconnect cable. Each pair of UCL's would be daisy-chained together using the attached pigtails to make an 8' long light, and the interconnect cable would join the first 8' section on one side of the space to the second 8' section on the other side. All four fixtures would be powered by the same power cord.
Now that you understand how the fixtures daisy chain together and how the interconnect cables are used, you can see how easy it is to expand this to larger spaces, custom benches, etc. Keep in mind there is a limit to how many fixtures you can daisy chain together:
- 8pcs @ 120V
- 13 pcs @ 208V
- 15 pcs @ 240V
- 18 pcs @ 277V
Controller Options
Grow Pros UCL's can be controlled using most 0-10V controllers on the market today. When using a TrolMaster controller you will simply need to add a TrolMaster LMA-14. Grow Pros also offers a low-cost controller that has many additional features for controlling UCL's.
If you are planning on using a simple ON/OFF timer to control your Under Canopy Lights then you will need a Data Bypass Chip to plug into the data side of the power cord. This will make the lights default to 100% ON when they get power from the wall. This chip by-passes the standard commercial setting that defaults the light to 0% OFF until it receives a data signal (from a 0-10V lighting controller) to turn on. This commercial setting prevents lights from turning on in the middle of the night if the data signal or an individual fixture malfunctions. However, without using a Data Bypass Chip or a lighting controller, the fixture will not turn on when it's powered on.
Simply put...
- If you plan on using your Under Canopy Lights with a lighting controller (e.g. TrolMaster or any other 0-10V controller) - you do not need to purchase a Data Bypass Chip.
- If you will not be using a lighting controller - you must purchase a Data Bypass Chip.
Use Grow Pros 2-way or 3-way data splitters to control all under-canopy lights with a single controller. These splitters efficiently distribute control signals, simplifying your installation and enhancing system performance. They are designed for seamless integration with your existing lighting setup.

Lighting Stands
Grow Pros offers optional telescopic stands to keep your UCL's off the floor or bottom of your trays. They facilitate easy installation and secure placement of your UCL's.
What is the difference between Model 1 and Model 2 lights in terms of spectrum and compatibility?
When choosing between Model 1 and Model 2 lights, understanding their differences in spectrum and compatibility is essential for optimizing plant growth.
- Model 1 Lights: These lights are tailored to enhance particular growth phases by incorporating 20% red light in their spectrum. This balance is perfect for nurturing phases that require a boost in the red spectrum.
- Model 2 Lights: Stand out with a striking 80% red light composition, Model 2 lights are engineered to significantly enhance flowering and fruiting stages. This robust red spectrum is optimal for producing the desired results during these critical growth phases.
Compatibility Factors
- Model 1 Lights: Ideally used with Single Channel Full spectrum top lights. This pairing allows Model 1 lights to complement Single Channel LED Grow Lights Full spectrum, particularly enriching it with red light.
- Model 2 Lights: Best suited for use with full-spectrum LED top lights. The high concentration of red light from Model 2 beautifully complements Growpros Beast Series 2 channels full-spectrum LED Grow Lights, providing plants with a balanced lighting environment conducive to all-around growth.
By choosing the right model for your lighting setup, you can effectively cater to the specific needs of your plants throughout different stages of growth.
Specifications
- Wattage: 125W
- Input power: 120V-277V / 50/60Hz
- IP Rating: IP65
- Color: Full Spectrum + Infrared
- Lifespan: 90% output at 36,000 hours
- Warranty: 5 years limited
- Amperage:
- 120V – 1.04A
- 208V – 0.60A
- 240V – 0.52A
- 277V – 0.45A
- Daisy chain:
- 8pcs @ 120V
- 13 pcs @ 208V
- 15 pcs @ 240V
- 18 pcs @ 277V

Specifications
Specifications
| Brand | Grow Pros Solutions |
|---|---|
| Part Number | GPS-UCL1-4FT |
| Length | 48 in |
| Width | 6 in |
| Height | 6 in |
| Product Weight | 5.0 lb |
| Warranty | Yes |
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