Quote Originally Posted by Dogznova
Red 660nm will produce more trich's the one can shake a stick at and know harm to you or your plants. Leave the UVa,b,c to reptiles.
Dogznova;

There are some subjects that I try to avoid on these boards....one of them is the use of UVB supplemental lighting. But you've pushed my LED button so I guess it's time for me to address it.

First, I have noticed a slight increase in trichome production using LED lighting. The two Procyon's I used for awhile showed this effect, but they use red Cree LED's at 635nm.....not 660nm. While the full bandwith probably includes some 660, it could not be enough to explain the effect. Just possible the effect comes from the blues, Cree's peak at 450nm, and thier bandwith may include some UV or near UV. Hmmmmmmm interesting.

I currently have 2 Ti Pro-Blooms and they show even more trichome production then the Procyon's did and you know what, they have 660nm! But wait, they also have (drum roll please) UVB (ta da). It's one of the reasons I bought them, they where smart enough to use an enhanced light band that included UVB.

Main reason I avoided talking about UVB, I know it works and I can't see why there is even a discussion about it. It is so easy to demonstrate. I've tried back to back grows with and without, and there is no doubt in my mind it makes a big difference, not just trichome production but THC production.

Maybe you should have tried a little experiment with UVB before moving on to Martian Night lighting.....