Finding the best interlighting LED bars for greenhouse crops involves balancing light spectrum, coverage, energy efficiency, and ease of installation. The Barrina TX-L84 4FT LED Grow Light stands out for its wide coverage and high PPFD, making it ideal for larger greenhouses. The RDJ Bouns Under Canopy LED Grow Lights Bar offers full spectrum and waterproof design for under-canopy use, perfect for hydroponic setups. Meanwhile, the Litever Grow Light Strip Kit provides a budget-friendly, customizable solution with timer features. Each option involves tradeoffs between coverage, spectrum, and cost. Continue reading for a detailed comparison to find your best fit.
Key Takeaways
- Coverage area and mounting flexibility are vital for large versus small greenhouses, influencing the choice of bar length and number of units.
- Spectrum options vary; full spectrum lights support year-round growth, but specialized red or IR LEDs can boost flowering or fruiting stages.
- Linkability and ease of installation can save time and reduce costs, especially in larger setups where multiple bars are used.
- Energy efficiency and heat output are often tradeoffs—higher PPFD models tend to consume more power and generate more heat.
- Budget constraints influence the choice; high-end models offer premium features but may be excessive for smaller or hobby greenhouses.
More Details on Our Top Picks
Barrina T5 Grow Lights, 5000K Full Spectrum Daylight White, LED Grow Light Strips, 1FT Plant Growing Lamp with Magnetic Bar, Plant Lights for Indoor Plants, Greenhouse, Black Cover, Linkable, 8 Packs
This set stands out for its ease of installation and full-spectrum light coverage, making it ideal for both small and large greenhouse crop setups. Compared to the Barrina TX-L84, these strips are more flexible and easier to mount thanks to magnetic bars and included clips, while still providing high PPFD for seedlings and vegetative growth. The ability to link up to 16 units reduces wiring complexity and expands coverage seamlessly, but the tradeoff is that these are less powerful per strip than larger fixtures like the Barrina TX-L84, so they may require more units for extensive coverage. Pros: Easy to install, linkable up to 16 lights, full spectrum with 95% light absorption, magnetically attachable. Cons: Less intense light per strip than larger fixtures, may need many units for large-scale coverage, minimal waterproofing for outdoor use.
Verdict: This pick suits growers wanting flexible, scalable interlighting options with straightforward installation.
- ASIN: B0CHRMZC3F
- Light Source: LED
- Wattage: 40W (total for all units)
- Full Spectrum: 5000K
- Linkable: Yes, up to 16 units
- Dimensions: 1 ft per strip
- Installation: Magnetic, clips, cable ties
- Water Resistance: Not water-resistant
Pros:- Easy magnetic installation and flexible mounting options
- Linkable to expand coverage without complex wiring
- Full-spectrum light with high plant absorption efficiency
- Compact and lightweight for simple setup
Cons:- Less power per strip compared to larger fixtures like the Barrina TX-L84
- Requires multiple units for extensive coverage
- Limited waterproofing for outdoor environments
Best for: Growers seeking a customizable, easy-to-install interlighting system suitable for small to medium greenhouses.
Not ideal for: Large-scale commercial greenhouses needing high-intensity fixtures with broader coverage per unit.
- Light Source Type:LED
- Wattage:40W total (8 x 5W)
- Full Spectrum:5000K
- Linkable:Up to 16 units
- Dimensions:1 ft per strip
- Installation:Magnetic, clips, cable ties
- Water Resistance:Not water-resistant
Bottom line: This set is best for growers wanting a scalable, easy-to-install interlighting solution for greenhouse crops with moderate coverage needs.
Barrina TX-L84 4FT LED Grow Light, 84W, 4 LED Panels Wider Coverage, Full Spectrum with 730nm IR LEDs, High PPFD, Linkable, Hanging for Plant Lights Indoor, Greenhouse, Vegetable, Seeding, 1 Pack
This fixture excels in providing wider coverage with four 4ft LED panels, making it ideal for large greenhouses or multiple crop rows. Compared to the Barrina T5 strips, the TX-L84 delivers higher wattage and a more intense light output (84W vs. 40W), ensuring robust growth for seedlings and flowering crops. Its linkable design supports up to four units, simplifying wiring in extensive setups, yet it weighs more and requires more space for hanging. The inclusion of 730nm IR LEDs boosts flowering, but the larger size and higher power draw may be a consideration for smaller operations. Pros: High wattage and coverage, full spectrum with IR, linkable up to 4 units, suitable for large-scale greenhouses. Cons: Heavier and more space-consuming, higher power consumption, potentially overkill for small crops.
Verdict: This fixture is ideal for growers needing maximum coverage and intensity across larger greenhouse areas.
- ASIN: B0F7XG4963
- Light Source: LED
- Wattage: 84W
- Coverage Area: 47.24″×19.69″
- Linkable: Yes, up to 4 units
- Spectral Range: 620-680nm red, 730nm IR, 430-460nm blue
- Mounting: Hanging
- Water Resistance: Not water-resistant
Pros:- Wider coverage with 4 panels
- High power and PPFD for vigorous growth
- Includes IR for flowering enhancement
- Linkable for scalable coverage
Cons:- Heavier and larger for ceiling mounting
- Higher energy consumption
- Overkill for small or seedling stages
Best for: Commercial growers or large hobbyists needing high-intensity, broad-area interlighting for full crop coverage.
Not ideal for: Small indoor growers or setups with limited vertical space due to the fixture size and power requirements.
- Wattage:84W
- Coverage:47.24″×19.69 inches
- Spectral Range:620-680nm red, 730nm IR, 430-460nm blue
- Linkable:Yes, up to 4 units
- Mounting:Hanging
- Water Resistance:Not water-resistant
Bottom line: This fixture suits large-scale greenhouse applications where maximum coverage and intensity are priorities.
Barrina (1 Pack) T5 LED Shop Light, 4FT, 2200lm, 6500K (Super Bright White), 20W, Utility Shop Light, Ceiling and Under Cabinet Light, ETL Listed
This 4ft shop light offers bright, white daylight illumination ideal for supplementing greenhouse interlighting. It outperforms smaller, lower-lumen fixtures like Litever 36W strips in terms of brightness and coverage, making it suitable for under-cabinet or supplemental lighting rather than primary crop illumination. The easy installation and linkable design allow for quick setup across multiple areas, but it lacks the full spectrum and plant-specific wavelengths of dedicated grow lights. Its high lumen output ensures excellent visibility and plant monitoring, yet it’s not optimized for photosynthesis or flowering. Pros: Bright daylight white light, easy to install, linkable, ETL listed for safety. Cons: Not full spectrum for optimal plant growth, limited spectrum control, primarily for supplemental lighting.
Verdict: This fixture is best for growers needing bright, general lighting to complement specialized grow lights.
- ASIN: B01HBT32PW
- Wattage: 20W
- Lumens: 2200lm
- Color Temperature: 6500K
- Length: 4 ft
- Linkable: Yes, up to 8 fixtures
- Certification: ETL Listed
- Water Resistance: Not water-resistant
Pros:- High lumen output for bright illumination
- Easy to install and link with multiple units
- ETL safety certification
- Suitable for under-cabinet or general indoor use
Cons:- Limited spectrum for photosynthesis
- Not intended as sole grow light
- Lacks wavelength control for flowering or vegetative stages
Best for: Growers needing high-brightness supplemental lighting to enhance visibility and crop monitoring in greenhouses.
Not ideal for: Growers seeking full-spectrum, plant-optimized lighting for seedling or flowering stages without additional fixtures.
- Wattage:20W
- Lumens:2200lm
- Color Temperature:6500K
- Length:4 ft
- Linkable:Up to 8 fixtures
- Certification:ETL Listed
Bottom line: This shop light is a reliable choice for supplemental indoor lighting in greenhouse crop environments requiring high brightness.
Barrina T5 Grow Lights for Indoor Plants, Full Spectrum, 4ft 160W (8 x 20W), LED Grow Light Strip for Seed Starting, Greenhouse, Plug and Play, 8-Pack
This 8-pack provides full-spectrum light optimized for seed starting and vegetative growth, comparable in coverage to Litever grow kits but more flexible in mounting options. Its plug-and-play design with included clips and connectors simplifies setup, making it a good choice for hobbyists and small-scale growers. While it offers less wattage than larger fixtures like the TX-L84, its high PPFD and absorption rate support healthy seedling development and early vegetative growth. The main tradeoff is that it is less suitable for flowering or large-scale crop production, but it excels in targeted, efficient crop initiation. Pros: Full spectrum optimized for early growth, easy to install, linkable, high PPFD absorption. Cons: Limited power for flowering stages, requires multiple units for large areas, minimal waterproofing for outdoor use.
Verdict: Ideal for small to medium growers focusing on seedling and vegetative crop stages with flexible, scalable lighting.
- ASIN: B08FLYBCQW
- Wattage: 160W (8 x 20W)
- Coverage: Suitable for seedling and vegetative growth
- Full Spectrum: 6500K
- Linkable: Yes, up to 8 units
- Installation: Clips, connectors, plug-and-play
- Water Resistance: Not water-resistant
Pros:- Full spectrum optimized for early growth
- Easy to install and link
- High PPFD absorption for healthy seedlings
- Flexible mounting options
Cons:- Lower wattage for flowering
- Requires multiple units for large coverage
- Limited outdoor water resistance
Best for: Small to medium growers needing efficient, full-spectrum lighting for seedling and vegetative crop stages.
Not ideal for: Large-scale flowering or fruiting crops requiring higher wattage fixtures or outdoor environments.
- Wattage:160W
- Number of Units:8
- Coverage:Seedling and vegetative stages
- Full Spectrum:6500K
- Linkable:Yes, up to 8 units
- Installation:Clips, connectors
- Water Resistance:Not water-resistant
Bottom line: This set is perfect for seedling and early vegetative crop growth in controlled environments, with scalability for small operations.
RDJ Bouns Under Canopy LED Grow Lights Bar, 120W Full Spectrum with 660nm & Far Red, High Waterproof IP65, Daisy Chain Dimming, 46 Inch, Undercanopy Grow Lighting for Hydroponic Growing (U120)
This 46-inch, 120W full-spectrum LED bar is designed for under-canopy use, making it ideal for vertical farming or hydroponic setups where space is limited. Its IP65 waterproof rating surpasses typical greenhouse fixtures, providing durability in humid or wet environments, unlike the Barrina T5 shop light which is less water-resistant. The inclusion of 660nm red and far-red IR wavelengths enhances flowering and yield by 20-30%, and the dimming and daisy chain capabilities simplify complex crop environments. However, its focused length and smaller coverage area mean it’s best suited for targeted under-canopy lighting rather than broad interlighting in large greenhouses. Pros: Waterproof IP65, full spectrum with red and IR, dimmable, daisy chain compatibility. Cons: Limited coverage area, requires precise mounting, higher cost per coverage unit.
Verdict: This fixture works best in vertical farms or hydroponic systems needing durable, targeted under-canopy lighting.
- ASIN: B0FHQBM19Y
- Wattage: 120W
- Length: 46 inches
- Waterproof Rating: IP65
- Full Spectrum: 660nm + Far Red
- Dimming: Yes, 0-10V
- Connectivity: Daisy chain
- Application: Under canopy, hydroponic
Pros:- High waterproof IP65 rating
- Full spectrum with red and IR wavelengths
- Dimmable and daisy chain capable
- Compact for targeted under-canopy lighting
Cons:- Limited coverage length
- Requires precise mounting for uniform coverage
- Higher price for smaller coverage area
Best for: Vertical farms and hydroponic setups requiring durable, waterproof, under-canopy lighting with spectrum control.
Not ideal for: Large-scale, broad-area greenhouse interlighting where coverage per fixture is limited.
- Wattage:120W
- Length:46 inches
- Waterproof Rating:IP65
- Spectrum:660nm + Far Red
- Dimming:Yes, 0-10V
- Daisy Chain:Supported
- Application:Under canopy, hydroponic
Bottom line: This fixture is best for targeted, durable under-canopy lighting in vertical or hydroponic systems with high humidity.
LED Display Light Bar Kit – (4) 16inches Plug-in Linkable Strip Lights for Large Display Cabinet – Series + Parallel Connection – White 6000K
This kit stands out for its flexible linking options and easy installation, making it ideal for both home and commercial display setups. Compared to specialized grow lights like the Barrina TX92, it offers a broader application scope, especially for accent and shelf lighting. The seamless end-to-end connection and included extension cables allow for custom configurations, but the absence of specific grow spectrum features limits its use for plant cultivation. The energy-efficient LEDs produce low heat, ideal for enclosed spaces, yet it doesn’t emit the spectrum necessary for healthy plant growth. This makes it perfect for displays, art lighting, or under-cabinet illumination rather than greenhouse crops. Best suited for buyers needing adaptable, easy-to-install lighting for non-plant applications.
Pros:- Seamless end-to-end connection capability for custom configurations
- Low heat emission suitable for enclosed spaces
- Complete kit with extension cables and switch included
Cons:- Lacks full spectrum light needed for plant growth
- Not designed for horticultural applications
Best for: Homeowners or small business owners seeking versatile, energy-efficient display or accent lighting.
Not ideal for: Greenhouse growers needing full-spectrum grow lights, as this product lacks the spectrum for optimal plant development.
- Length per light:16 inches
- Color temperature:6000K
- Connection type:Series + Parallel
- Wattage:Not specified
- Power source:Plug-in
- Includes:4 light bars, switch, power adapter, extension cables
Bottom line: This product is best for users wanting adaptable, energy-efficient lighting for display or utility purposes rather than crop cultivation.
LED Grow Light 4FT Full Spectrum Compact Linkable Lighting Fixture for Indoor Greenhouse Year Round Plant Seedlings, Essential Grow Slim Hanging Suspended Strip
This grow light supports full spectrum illumination with red enhancement, making it a strong choice for seedlings and small indoor gardens. Unlike the Barrina TX72, it provides tailored spectrum options designed specifically for plant growth, including flowering and seeding stages. Its slim, compact design ensures it fits easily into tight spaces, and the included hanging kit simplifies setup. However, compared to higher wattage options like Barrina TX72, its 30W power limits its coverage and intensity for larger crops. Still, for hobbyists or those just starting out, this light offers reliable, straightforward operation with a 3-year warranty. This model makes the most sense for growers new to indoor gardening or with limited space needing full-spectrum light.
Pros:- Full spectrum with red light for flowering and seeding
- Slim, space-saving design
- Easy mounting with included hardware
Cons:- Limited to 30W power, restricting coverage area
- Not suitable for large or high-light-demand crops
Best for: Beginner indoor gardeners or small-scale greenhouse growers focusing on seedlings and small plants.
Not ideal for: Large-scale growers or those needing intense, high-PPFD lighting for mature crops, as this light’s power is limited.
- Length:4 ft
- Wattage:30W
- Spectrum:Full spectrum with red enhancement
- Linkable:Yes, supports connecting up to 4 strips
- Power supply:AC
- Warranty:3 years
Bottom line: Ideal for newcomers and small-scale indoor growers seeking full-spectrum lighting with simple setup.
Barrina TX72 4FT Grow Light for Indoor Plants, 72W (500W Equivalent), High PPFD, 5000K Daylight Full Spectrum, Grow Lights for Seed Starting, Vegetable, Greenhouse with On/Off Switch, Linkable, 1 Pack
This 72W model offers high PPFD levels and full-spectrum daylight, making it suitable for a variety of crops at different growth stages. Compared to the smaller Litever Grow Light Kit, the TX72 provides greater power density and coverage, supporting vigorous growth and flowering. Its aluminum housing ensures excellent heat dissipation, extending lifespan, and the daisy-chain capability simplifies large setups. The product excels in environments requiring intense light, but its higher wattage may increase energy costs relative to lower-power options. For serious greenhouse or indoor farm applications, this light strikes a balance between efficiency and power, though it might be overkill for small seedlings. This pick makes the most sense for growers needing intense, reliable light for substantial crop production indoors.
Pros:- High PPFD for vigorous plant growth
- Full spectrum daylight for all growth phases
- Excellent heat dissipation and long lifespan
Cons:- Higher energy consumption compared to lower wattage lights
- More expensive upfront cost
Best for: Experienced growers or commercial indoor farmers needing high PPFD and broad coverage for mature crops.
Not ideal for: Beginners or hobbyists with small setups, as this model’s high power may be unnecessary and more costly.
- Wattage:72W
- Coverage area:Supports multiple plants
- Spectrum:Daylight full spectrum, 5000K
- Daisy chain:Yes, supports linking
- Material:Aluminum housing
- Lumen output:High PPFD value
Bottom line: This is best suited for growers requiring high-intensity, full-spectrum light for larger or more demanding crops indoors.
Litever Grow Light Strip Kit 36W with Timer, 4 pcs 16 Inches LED Grow Light Strips with Extension Cables, Mounting Accessories for Greenhouse, Grow Shelf. Perfect for Indoor Growing-(4-Strip-Kit)
This 36W kit offers a compact and affordable solution for starting seedlings and small plant setups. Unlike the Barrina TX72, it provides lower wattage, but the included timer adds convenience for automated operation. Its flexible daisy-chain capability makes it easy to expand coverage modestly, and the waterproof connectors enhance durability in humid environments. While it is less powerful than higher-end models like the Barrina TX72, its simplicity and affordability make it an attractive option for hobbyists or those with limited space. However, its lower power limits its effectiveness for large crops or flowering stages. This kit makes sense for growers new to indoor horticulture who need a straightforward, cost-effective light for small-scale plant growth.
Pros:- Affordable price point
- Includes timer for automation
- Waterproof connectors for humid environments
Cons:- Limited to 36W, restricting coverage and intensity
- Not suitable for large or high-light-demand plants
Best for: Beginners or hobbyists with small indoor gardens or seedling trays on a budget.
Not ideal for: Larger growers or those needing intense lighting for flowering or mature crops, as this is underpowered for such applications.
- Wattage:36W
- Number of strips:4
- Length per strip:16 inches
- Spectrum:Full spectrum
- Timer:Yes
- Waterproof:Yes
Bottom line: Perfect for beginners or small-scale growers seeking a simple, inexpensive grow light solution.
Barrina Plant Grow Lights, 4FT 5000K Full Spectrum Daylight White, 252W(6 x 42W, 1400W Equivalent), T8 LED Grow Light Strips, Growing Lamp Fixture, Plant Lights for Indoor Plants, Greenhouse, 6-Pack
This 252W set provides extensive coverage with six T8 LED strips, making it ideal for larger greenhouses or commercial operations. Its full-spectrum daylight at 5000K supports all growth phases, from seedling to flowering, outperforming compact models like Litever in intensity and coverage. Its aluminum shell ensures efficient heat dissipation, and the included mounting hardware makes installation straightforward. Compared with smaller or lower wattage options, this package offers the power needed for substantial crop production, but the higher energy use and cost may deter small-scale growers. For those aiming to maximize yield in a large indoor environment, this set hits the sweet spot of power and coverage. This product makes the most sense for professional or large-scale indoor growers looking for broad, intense lighting.
Pros:- Extensive coverage with 6 LED strips
- Full spectrum daylight, 5000K
- Effective aluminum heat dissipation
Cons:- Higher power consumption and energy cost
- Bulkier setup requiring more space
Best for: Large indoor farms or greenhouses requiring high-intensity, full-spectrum lighting for multiple crops simultaneously.
Not ideal for: Small hobbyists or those with limited budgets, due to its higher wattage and cost.
- Total wattage:252W
- Number of strips:6
- Spectral temperature:5000K
- Coverage:Large greenhouse or multi-plant areas
- Material:Aluminum shell
- Equivalent wattage:1400W
Bottom line: Optimal for large-scale indoor crop production where high light intensity and coverage are necessary.
How We Picked
The products were evaluated based on performance, build quality, coverage area, spectrum versatility, ease of installation, and value for money. We prioritized models with high PPFD ( Photosynthetic Photon Flux Density) for effective plant growth, especially in interlighting applications. Linkability and waterproofing features were considered for ease of setup and durability in greenhouse environments. We ranked products by how well they balance these factors for different greenhouse sizes and crop needs, aiming to provide options for beginners, hobbyists, and commercial growers alike.Factors to Consider When Choosing Best Interlighting Led Bars For Greenhouse Crops
Choosing the best interlighting LED bars for your greenhouse requires understanding key factors that influence plant health, energy use, and setup flexibility. Not all LED bars are created equal, and making the right choice depends on your specific crop type, greenhouse size, and budget. Consider these important aspects to ensure your lighting setup supports optimal growth and is cost-effective over time.Coverage and Length
Assess your greenhouse’s size to determine how many LED bars you’ll need. Longer bars or multiple units can provide more uniform coverage, but they also increase costs and complexity. For large greenhouses, look for options that are easily linkable or extendable. Smaller setups can benefit from compact, plug-and-play models that simplify installation without sacrificing light distribution.
Spectrum and Light Quality
Full spectrum lights that mimic natural sunlight are generally best for supporting all growth stages. However, some growers prefer specific spectra, such as red or IR LEDs, to promote flowering or fruiting. Be aware that narrower spectrum options may be less versatile but can be more energy-efficient if tailored to your crop cycle. Always prioritize high-quality LEDs with high PPFD for robust plant growth.
Ease of Installation and Linkability
In larger greenhouses, linking multiple bars reduces wiring complexity and saves installation time. Check if the LED bars support daisy-chaining or have quick-connect features. Also, consider mounting options—bars with magnetic or clip-on mounts can simplify setup, especially if you need to reconfigure your lighting layout frequently.
Energy Efficiency and Heat Management
LED efficiency impacts operating costs significantly. Higher PPFD models tend to consume more power, but some newer designs balance output with energy use effectively. Proper heat dissipation is crucial; poorly cooled LED bars can degrade faster. Look for models with good thermal management features, especially if your greenhouse lacks climate control.
Budget and Long-Term Value
While premium models offer advanced features and durability, they come at higher prices. Conversely, budget options may suffice for small or hobby greenhouses but might lack longevity or coverage. Evaluate your crop needs, future expansion plans, and how much you’re willing to invest. Sometimes, spending more upfront on quality LEDs reduces replacement costs and improves crop yields.
Frequently Asked Questions
How many LED bars do I need for a medium-sized greenhouse?
The number of bars depends on your greenhouse dimensions and crop type. For a typical medium-sized greenhouse (around 20×30 feet), 2-4 bars evenly spaced can provide uniform coverage, especially if they are linkable and adjustable. Consider your crop’s light requirements and whether you want overhead or under-canopy lighting. Proper spacing ensures plants receive consistent light intensity without hotspots or shadows.
Can I use these LED bars for both seedling growth and flowering?
Yes, full spectrum LED bars are suitable for multiple growth stages, including seedling, vegetative, and flowering phases. However, some models with adjustable spectra or red/IR LEDs offer more targeted support for flowering and fruiting. Choosing a versatile, full spectrum option simplifies your setup and reduces the need for multiple lighting systems, making it easier to manage crop cycles.
Are waterproof LED bars necessary for greenhouse use?
Waterproof or water-resistant LED bars are highly recommended for greenhouse environments due to high humidity, watering, and condensation. IP65-rated models, for example, resist dust and water ingress, extending their lifespan and reducing maintenance. Even if your setup is indoors or dry, waterproofing adds an extra layer of durability and peace of mind, especially during cleaning or heavy watering.
How energy-efficient are these LED bars compared to traditional lighting?
LED bars generally consume significantly less power than traditional HID or fluorescent lights while delivering comparable or higher PPFD. Modern LED designs focus on maximizing efficiency, translating into lower electricity bills. Look for models with high lumen output per watt and good thermal management to ensure you’re getting the best energy-to-light conversion. Over time, this efficiency can lead to substantial cost savings.
What should I consider if I want to expand my greenhouse lighting in the future?
If you plan to grow your setup, choose LED bars that are easily linkable and support extension modules. Modular designs or those with multiple connection points make scaling straightforward. Also, consider the compatibility with existing fixtures and power supplies. Prioritizing flexible, adjustable systems helps ensure your investment remains useful as your crop area expands.
Conclusion
For small hobby greenhouses or beginners, the Litever Grow Light Strip Kit offers easy setup and affordability. Commercial growers or those with larger spaces should consider the Barrina TX-L84 4FT LED Grow Light for its coverage and high PPFD. If durability and under-canopy use are priorities, the RDJ Bouns Under Canopy LED Grow Lights Bar provides waterproofing and specialized spectrum options. The highest-end choice, the Barrina TX-L84, makes sense for growers seeking maximum coverage and energy efficiency. Tailor your decision based on your greenhouse size, crop needs, and budget to optimize plant performance.
