When selecting an led grow light with UV supplemental bars, understanding the balance between spectrum, coverage, and build quality is key. The Spider Farmer GlowR40 stands out as the best overall for its reliable performance and versatile dimming options. For those seeking targeted UV enhancement, the AC Infinity IONBEAM U2 offers precise control with dual wavelengths and digital scheduling. The main challenge in this category is finding a light that combines effective UV spectrum with ease of use, without overpaying for features you may not need. Keep reading for a detailed breakdown of the best options and what makes each one unique.
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Key Takeaways
- Top picks balance spectrum quality with ease of installation and durability.
- UV supplemental bars vary widely in wavelength, affecting their impact on plant growth.
- Most high-performance models include digital dimming and scheduling for precise control.
- Coverage area is a critical factor, especially for larger grow tents or setups.
- Higher-priced options tend to offer better build quality and spectrum customization.
| led grow light with uv supplemental bar | Length |
|---|---|
| Spider Farmer GlowR40 LED Plan | — |
| AC Infinity IONBEAM U2 UV LED | — |
| Mars Hydro ADlite UV30 & IR15 | — |
| Spider Farmer SUPP-UV30 & IR16 | 23.6 inches |
| AC Infinity IONBEAM U4 Targete | 11 inches |
| Spider Farmer SUPP-UV60 & IR30 | 35.4 inches |
More Details on Our Top Picks
Spider Farmer GlowR40 LED Plant Grow Light, 2ft Deep Red Supplemental Lighting Bar, 650-665NM, 40W, Waterproof, Dimmable, Series Connection
This LED grow light excels in providing intense deep red wavelengths (650-665nm) that significantly boost flowering and fruiting, making it a strong contender against larger, full-spectrum options like the Mars Hydro ADlite. Its waterproof, dust-resistant design ensures durability in humid environments, and the digital timer adds automation for convenience. However, the 40W output may fall short for very large grow spaces, and it requires an electrical connection for series linking, which could complicate setup for some users. Compared to the AC Infinity IONBEAM U4, it offers more wattage but less spectral flexibility.
Pros:- Efficient deep red spectrum promotes flowering and fruiting
- Waterproof and dust-resistant for humid environments
- Flexible mounting and series connection options
- Digital timer for automated scheduling
Cons:- Limited to 40W, not ideal for large grow areas
- Requires external electrical setup for series connection
- No included batteries, dependent on external power
Best for: Indoor growers seeking efficient flowering support in small to medium spaces with automated control needs
Not ideal for: Large-scale growers requiring high-intensity lighting for expansive areas or full-spectrum coverage
- Light Source Type:LED
- Power Source:Corded Electric
- Maximum Compatible Light Source Wattage:40 Watts
- Light Source Wattage:40 Watts
- Mounting Type:Ceiling Mount
- Special Features:Digital Programmable Timer, Daisy Chain Design
Our verdict“This pick is perfect for indoor growers needing targeted deep red lighting with automation in small to medium setups.”
AC Infinity IONBEAM U2 UV LED Grow Light Bars, 11”, 2-Pack with 365nm & 395nm Diodes, Digital Dimming & Schedule Controller
This pair of 11-inch UV LED bars provides precise UVA light (365nm and 395nm), ideal for stimulating flowering and enhancing fruiting, especially when paired with full-spectrum lights like the Spider Farmer GlowR40. The digital dimming and scheduling offer tailored UV exposure, but their limited spectrum focus means they can’t replace full-spectrum grow lights. Mounting is straightforward thanks to magnetic options, yet the UV-only design could limit their utility during vegetative stages, making them best suited for flowering phases.
Pros:- Provides targeted UVA spectrum to boost flowering
- Digital dimming and scheduling for precise control
- Easy magnetic mounting in various grow environments
Cons:- Limited to UV spectrum, no full-spectrum capabilities
- Requires mounting setup that may not fit all spaces
- Not suitable for vegetative stage lighting
Best for: Growers wanting to optimize flowering and fruiting with targeted UV light in small to medium tents
Not ideal for: Beginners seeking a full-spectrum solution or those needing broad-spectrum lighting for all plant stages
- Number of Bars:2
- Bar Length:11 inches
- Diodes:365nm and 395nm UV LEDs
- Features:Digital dimming, schedule programming, magnetic mounting
Our verdict“This set works best for growers focusing on flowering with targeted UVA enhancement in controlled environments.”
Mars Hydro ADlite UV30 & IR15 LED Grow Light for Indoor Plants, 3×3 ft Coverage
The Mars Hydro ADlite combines UV and IR light to mimic natural sunlight, supporting faster flowering and stronger plant health over a 3×3 ft area. It’s particularly suited for growers wanting to boost photosynthesis and plant resistance, outperforming simpler UV-only bars. The need for suspended installation and compatibility with only certain main lights like the FC4800 introduces setup limitations, and it isn’t designed for vegetative growth stages. Compared with the dedicated UV bars, it offers broader spectrum but at the cost of more complex installation.
Pros:- Enhances photosynthesis and plant resilience
- Speeds up flowering and growth cycles
- Mimics natural sunlight with UV and IR spectrum
Cons:- Requires suspended installation and specific main lights
- Not suitable for vegetative stages with UV and blue simultaneously
- Limited to a 3×3 ft coverage area
Best for: Home gardeners and small farms aiming for accelerated flowering with thermal benefits in a defined space
Not ideal for: Growers needing full-spectrum lighting or for larger coverage areas beyond 3×3 ft
- Coverage Area:3×3 ft
- Light Type:LED grow light
- Includes:UV30, IR15 light bars
- Compatibility:FCE4800, FC4800 main lights
- Recommended Main Light Power:Under 500W
Our verdict“This device suits growers seeking to accelerate flowering with thermal effects within a moderate indoor space.”
Spider Farmer SUPP-UV30 & IR16 LED Grow Light Bars Set 23.6″ Long, 365-370nm UV & 730-745nm IR Supplemental Light for Indoor Plants, Grow Tents
This 4-pack of 23.6-inch bars provides dense UV and IR diodes, making it an excellent choice for supplementing full-spectrum grow lights like the GlowR40 during flowering and fruiting. The high-density LED arrays ensure strong spectral output, and the durable build promises long service life. While the setup is straightforward with included brackets, these bars require compatible power kits, which could add to overall costs, and they are designed solely for supplementation, not as primary lighting sources.
Pros:- High-density LED arrays improve spectral output
- Optimal UV and IR spectrum for flowering and fruiting
- Long lifespan and durable construction
- Easy installation with quick-mount brackets
Cons:- Requires compatible power kits for operation
- Limited to supplemental lighting, not primary light source
- Higher setup complexity for novices
Best for: Experienced growers wanting to enhance flowering with powerful UV and IR supplements in various tent sizes
Not ideal for: Beginners or growers seeking an all-in-one full-spectrum light for all stages
- Length:23.6 inches
- UV Spectrum:365-370nm
- IR Spectrum:730-745nm
- Diodes per UV bar:60
- Diodes per IR bar:44
- Lifespan:50,000 hours
- Compatibility:Grow tents 2×2, 3×3, 4×4; GGS AC5/AC10
Our verdict“This set is ideal for advanced growers wanting to maximize flowering performance with powerful UV and IR supplementation.”
AC Infinity IONBEAM U4 Targeted Spectrum UV LED Grow Light Bars, 11”, 4-Bar Kit with 365nm and 395nm Diodes, Digital Dimming & Schedule Controller
The AC Infinity IONBEAM U4 kit features four 11-inch bars, each loaded with targeted UV diodes (365nm and 395nm), designed to boost flowering and fruiting stages. Its digital dimming and scheduling provide fine control over UV exposure, surpassing simpler single-bar options like the U2. However, being UV-only, it can’t replace full-spectrum lighting and may require additional fixtures for vegetative growth. Its four-bar design offers versatility but demands more complex mounting and power management, making it best suited for experienced growers aiming for precise UV control.
Pros:- Enhances flowering and fruiting with targeted UV spectrum
- Digital dimming and scheduling for precise control
- Four separate bars offer flexible placement options
- Easy mounting with included steel brackets
Cons:- Limited to UV spectrum, lacking full-spectrum coverage
- Higher complexity and cost for setup
- Requires additional lighting for vegetative stages
Best for: Advanced growers seeking customizable UV enhancement with multiple bars for fine spectral control
Not ideal for: Beginners or those needing broad-spectrum lighting for all plant growth stages
- Length:11 inches
- Number of Bars:4
- Diodes:365nm and 395nm UV LEDs
- Features:Digital dimming, schedule programming
Our verdict“This kit is designed for growers wanting to tailor UV exposure across multiple bars, maximizing flowering potential in controlled environments.”
Spider Farmer SUPP-UV60 & IR30 LED Grow Light Bars Set 35.4″ Long, 365-370nm UV & 730-745nm IR Supplemental Light for Indoor Plants, Grow Tents
This set of four 35.4-inch bars stands out for its high-density LED arrays, offering robust UV and IR spectrums that can significantly boost flowering and fruiting stages. Compared with the AC Infinity IONBEAM U2, the SUPP-UV60 & IR30 provides a longer, more versatile coverage area, ideal for larger grow tents. Its durable construction and 50,000-hour lifespan support long-term use, but the setup requires compatible main grow lights and precise spectral adjustments to maximize effectiveness. While the app control simplifies operation, the dependence on proper lighting alignment can pose a challenge for beginners. This pick makes the most sense for indoor growers seeking a comprehensive, long-lasting supplemental UV/IR solution that can be tailored to different growth phases.
Pros:- High-density LED array enhances UV and IR effectiveness for flowering
- Long lifespan of 50,000 hours reduces replacement costs
- Easy installation with quick-mount brackets and app control
Cons:- Requires compatible main grow lights for optimal results
- Spectral effectiveness depends heavily on correct adjustment during different growth stages
Best for: Growers with large tents or multiple grow areas who want customizable, high-density UV and IR supplementation.
Not ideal for: Beginners or small-scale growers with limited space, as the setup complexity and cost may outweigh benefits.
- Length:35.4 inches
- UV Spectrum:365-370nm
- IR Spectrum:730-745nm
- Diodes per UV bar:120
- Diodes per IR bar:88
- Lifespan:50,000 hours
- Material:Aluminum and copper
Our verdict“This set is ideal for serious indoor growers seeking a durable, customizable UV and IR supplement for large-scale flowering setups.”
How We Picked
Products were selected based on performance, spectrum variety, build quality, ease of use, and value. We prioritized models that offer reliable UV wavelengths, straightforward installation, and durability suitable for different grow environments. Our ranking emphasizes versatility for various grow scales, from small tents to larger setups, and considers user-friendly features like digital controls. We also looked at customer feedback on reliability and maintenance to ensure these lights are both effective and long-lasting.Factors to Consider When Choosing Led Grow Light With Uv Supplemental Bars
Choosing the right led grow light with UV supplemental bars involves more than just wattage and spectrum. It’s essential to consider factors like coverage area, spectrum customization, build quality, and control options. Understanding these elements helps prevent common mistakes, such as overpaying for unnecessary features or selecting a light with insufficient UV output for your plant species. This guide highlights key considerations to ensure your investment accurately supports your indoor gardening goals.Spectrum Quality and UV Wavelengths
Not all UV bars are created equal—some emit at 365nm, others at slightly different wavelengths like 370nm or 395nm. The specific UV wavelength impacts how plants absorb UV light, affecting growth and pest resistance. For maximum effectiveness, look for models that offer targeted UV ranges, especially if you’re cultivating photoperiod-sensitive plants or seeking pest control. Investing in adjustable spectrum options can also provide greater flexibility as your plants mature.
Coverage Area and Mounting Flexibility
Matching the light’s coverage to your grow space is critical. Smaller bars excel for compact tents or clone setups, while larger sets are better for expansive areas. Consider the length and number of bars included to ensure even light distribution. Flexible mounting options and modular designs allow you to customize your setup, but beware of models that are difficult to install or overly rigid, which can limit positioning options.
Build Quality and Durability
Durability is often overlooked but essential for long-term operation. Waterproofing, high-quality diodes, and sturdy mounting hardware contribute to the lifespan of your grow light. Cheaper models may save money upfront but often require more maintenance or replacements. Investing in well-built options can save money and hassle in the long run, especially in humid or high-traffic grow environments.
Control Features and Ease of Use
Features like digital dimming, scheduling, and remote control improve usability and precision. These controls allow you to optimize light cycles and intensity without manual adjustments, which is especially helpful for automated grow setups. However, more complex controls can also introduce a learning curve. Choose a model that balances advanced features with intuitive operation based on your experience level.
Cost and Value
While premium models offer advanced spectrum control and durability, they come at a higher price. Conversely, budget options can be effective for small-scale or beginner growers but may lack longevity or spectrum customization. Consider your grow scale and future expansion plans to determine if investing more upfront will pay off through better results and fewer replacements. Remember, the most expensive option isn’t always the best for your specific needs.
Frequently Asked Questions
Can UV supplemental bars improve my plant growth?
Yes, UV supplemental bars can enhance certain aspects of plant growth, such as pest resistance, flowering, and secondary metabolite production. However, the effectiveness depends on the wavelengths and intensity used. Properly calibrated UV exposure can stimulate plant defenses and improve overall health, but excessive UV can cause stress or damage. It’s important to select a model with adjustable UV levels to tailor the light to your specific plants and growth stage.
Are UV bars safe to use around humans and pets?
Most UV LEDs used in grow lights emit at wavelengths considered safe when used properly, especially the 365-395nm range. Still, direct exposure to UV light should be avoided, as it can cause skin and eye irritation. Manufacturers often include shielding or recommend specific mounting heights to mitigate risk. Always follow the safety instructions and avoid direct UV exposure during operation to ensure a safe environment.
How do I determine the right length and number of UV bars for my grow space?
Start by measuring your grow area and understanding the coverage specifications of each model. Larger or multiple bars provide more even light distribution in bigger tents or rooms. For small setups, shorter bars or fewer units may suffice, but larger spaces benefit from multiple bars or longer sets. Consider the mounting options and adjustability as well, to ensure the lights can be positioned optimally for uniform coverage.
Is it worth paying extra for digital dimming and scheduling?
Investing in digital controls can significantly enhance your grow light’s usability by allowing precise adjustments of light intensity and automated scheduling. This feature is especially valuable for consistent light cycles, reducing manual effort and optimizing plant response. While it adds to the initial cost, the convenience and improved control can lead to better yields and healthier plants, making it worthwhile for serious growers or automated setups.
Can I upgrade my existing grow lights with UV supplemental bars later?
Adding UV bars to existing lighting setups can be possible if your current system supports modular extensions or has compatible mounting options. However, compatibility issues may arise, and wiring or power supply limitations could restrict upgrades. For best results, choosing a system designed for easy expansion from the start often provides a more reliable and straightforward solution, avoiding potential technical complications down the line.
Conclusion
The best overall choice for most growers is the Spider Farmer GlowR40, thanks to its reliable performance, waterproof design, and dimmable features. The AC Infinity IONBEAM U2 offers excellent UV spectrum control for those prioritizing targeted UV effects and automation. For larger or more advanced setups, the Spider Farmer SUPP-UV60 provides extensive coverage and spectrum flexibility. Beginners or hobbyists might prefer simpler, budget-friendly models, while professional growers should consider premium options with advanced controls and durability to match their scale. Your ideal pick depends on your grow space, experience level, and specific goals.
