light spectrum on Universal
Quick answer
If your Universal has light spectrum, the most likely cause is: Plants require specific wavelengths of light for photosynthesis - primarily red (600-700nm) for flowering and stem growth, and blue (400-500nm) for vegetative growth and leaf development. Standard home lighting often lacks the correct spectrum and intensity for healthy plant growth. Without adequate light, plants cannot produce glucose through photosynthesis and will become leggy, pale, and unable to sustain normal metabolism.
Start here:
- 1. Use full-spectrum grow lights (6500K daylight bulbs) that include both red and blue wavelengths
- 2. Position plants within 2-4 feet of light sources for adequate intensity
Why Universal gets light spectrum
Plants require specific wavelengths of light for photosynthesis - primarily red (600-700nm) for flowering and stem growth, and blue (400-500nm) for vegetative growth and leaf development. Standard home lighting often lacks the correct spectrum and intensity for healthy plant growth. Without adequate light, plants cannot produce glucose through photosynthesis and will become leggy, pale, and unable to sustain normal metabolism.
How to reverse light spectrum on Universal
- 1
Use full-spectrum grow lights (6500K daylight bulbs) that include both red and blue wavelengths
- 2
Position plants within 2-4 feet of light sources for adequate intensity
- 3
Provide 12-14 hours of artificial light daily to simulate natural daylight cycles
- 4
For flowering plants, add red-spectrum lighting or select bulbs labeled 'grow lights' with high red content
- 5
Monitor plant response - stretching indicates too little light; bleached or scorched leaves indicate too much
Keep light spectrum off this Universal
Match light intensity (measured in foot-candles or lux) to plant needs: succulents need 2000-5000+ fc, tropical understory plants need 500-2000 fc. Use timers for consistent 12-14 hour photoperiods.