Supplementary LED Bars for Targeted Grow Lighting
Upgrade an existing lighting setup with supplementary LED bars for additional coverage or selected wavelengths. Choose from full-spectrum, adjustable-spectrum, UV, far-red and deep-red bars designed for propagation, canopy support and controlled spectrum management.
- Full-spectrum bars for flexible additional light coverage
- UV, far-red and deep-red options for specialist applications
- Low-profile, efficient fixtures for tents, racks and grow rooms
Add Coverage or Adjust the Available Light Spectrum
Supplementary LED bars are used alongside a main grow light or, where specified, as low-profile stand-alone lighting. Their linear format makes it easier to fill darker edges, add light between larger bars or introduce a targeted part of the spectrum.
Full-Spectrum and Adjustable-Spectrum LED Bars
Full-spectrum bars can improve general coverage or support compact plants in shelves and propagation areas. Adjustable models provide greater flexibility when the same fixture needs to support seedlings, vegetative development or later plant stages.
UV, Far-Red and Deep-Red Lighting
Specialist bars provide selected wavelengths for defined horticultural uses. They should be treated differently from general full-spectrum lighting: timing, exposure and compatibility matter, and the manufacturer's instructions must always take priority.
Integrating Bars with a Main LED Fixture
Check the mounting points, power requirements, linking limits and controller compatibility before combining equipment. Some bars are designed to mount directly onto compatible Kaizen fixtures, while others can be positioned independently.
Choosing Supplementary LED Bars
- Define the purpose: decide whether you need more coverage, propagation light or a targeted spectrum.
- Check compatibility: confirm physical mounting, voltage, controller and daisy-chain requirements.
- Match bar length: choose 2ft or 4ft formats to suit the fixture and growing area.
- Control exposure: follow product-specific timing and intensity guidance, especially with UV.
- Use suitable protection: never look directly at active UV light and follow all supplied safety instructions.
Why Buy Supplementary LED Bars from Holland Horticulture?
Holland Horticulture has supplied indoor growing equipment since 1996. We stock practical full-spectrum and specialist bars, with support to help you select the correct spectrum and check compatibility with your main LED grow light.
Supplementary LED Bar FAQs
Do supplementary LED bars replace the main grow light?
Usually not. Most are designed to add coverage or selected wavelengths alongside a primary fixture. Some full-spectrum bars can be used alone for smaller or lower-intensity applications when the specification allows.
What is the difference between UV, far-red and deep-red bars?
Each produces a different wavelength range and has a different horticultural purpose. Use the product guidance carefully rather than treating the bars as interchangeable.
Can supplementary LED bars be daisy-chained?
Many can, but the permitted quantity and connection method vary. Never exceed the manufacturer's stated linking or electrical limits.
Are UV grow-light bars safe?
UV exposure can damage eyes and skin. Switch the light off during installation and maintenance, avoid looking directly at it and follow every safety instruction supplied with the product.
For fixtures designed specifically below dense growth, visit under-canopy LED lights.












