FloraFlex 6-Bar 720W Far Red Under Canopy LED Grow Light

Far-red light (700-750nm) triggers powerful photomorphogenic responses including accelerated flowering transitions, increased flowering site density, and enhanced material development. For under-canopy applications specifically, far-red wavelengths penetrate foliage more effectively than shorter wavelengths, reaching lower growth sites with less absorption by upper leaves. The combination of Osram 6.24 far-red diodes with full-spectrum custom chips in this fixture provides both the penetration power and complete spectral balance needed to stimulate lower canopy productivity while maintaining proper plant architecture.

At 3.3 µmol/J, this far-red fixture achieves significantly higher efficacy than most full-spectrum grow lights (typically 2.5-2.9 µmol/J). This exceptional efficiency is possible because far-red LEDs convert electricity to photons more efficiently than broad-spectrum combinations. The result is maximum far-red photon delivery per watt consumed, reducing operating costs while providing the substantial 2376 µmol/s output needed for large-area under-canopy supplementation. This efficiency advantage makes far-red supplementation economically viable even for commercial-scale operations.

The choice depends on your supplementation goals and existing overhead lighting. Far-red fixtures like this 720W model excel at enhancing flowering responses, accelerating development, and penetrating dense canopies due to far-red's superior foliage penetration. They're ideal when your overhead lighting already provides adequate broad-spectrum coverage and you want to maximize flowering enhancement. Full-spectrum under-canopy lights provide more balanced photosynthesis support. Many commercial operations use a combination: the FloraFlex 6-Bar 720W Full Spectrum Under Canopy LED for general lower canopy illumination and far-red for targeted flowering enhancement during bloom phases.

The adjustable 100W-720W power range enables multiple strategies. Some growers run far-red throughout the entire photoperiod at moderate intensity (300-500W) for continuous flowering enhancement. Others use high intensity (600-720W) only during the final 15-30 minutes of each photoperiod to accelerate night-phase transition. A third approach involves ramping far-red intensity progressively through flowering stages, starting low (100-200W) early in bloom and increasing to full power (720W) during peak flowering, often in conjunction with specialized nutrients like FloraFlex Full Tilt to maximize final material weight.

The FloraFlex Under Canopy Adjustable Stand (sold separately) is the recommended mounting solution as they're specifically designed to work with this fixture's dimensions and weight. However, you can use alternative mounting methods such as adjustable hanging systems, cable suspension, or custom frame solutions as long as they provide stable support and allow proper height adjustment. The key is positioning the fixture horizontally beneath your canopy at a height that provides adequate far-red coverage without obstructing airflow or maintenance access.

The 10-year warranty is exceptional—double the typical 5-year standard for commercial LED grow lights. This extended coverage reflects FloraFlex's confidence in the premium Osram 6.24 diode longevity, robust passive cooling system, and overall construction quality. The longer warranty period is particularly valuable for commercial operations where equipment downtime impacts revenue, providing peace of mind for nearly a decade of continuous operation. Few manufacturers offer this level of long-term coverage, making it a significant differentiator in total cost of ownership calculations.

Yes, combining both fixtures creates a comprehensive under-canopy lighting strategy that provides broad-spectrum photosynthesis support plus targeted far-red enhancement. Many commercial operations use the full-spectrum 720W fixtures for baseline under-canopy illumination and add far-red 720W fixtures for flowering enhancement. The independent dimming capability on each fixture type allows precise control over your spectral ratio throughout different growth stages. This combined approach maximizes both photosynthetic capacity and flowering response in lower canopy zones.

The 10-year warranty covers manufacturing defects and component failures under normal operating conditions, including LED diode failures, driver malfunctions, dimming system issues, and housing defects. The warranty typically excludes damage from improper installation, operation outside specified parameters (such as exceeding 95°F ambient temperature or exposing the fixture beyond IP65 specifications), physical damage, or unauthorized modifications. Always operate within the 120V-277V voltage range, maintain ambient temperatures below 95°F, and follow recommended installation practices to ensure full warranty coverage throughout the 10-year period and the fixture's 50,000+ hour lifespan.