Quote Originally Posted by Zcomp
Mind me if I sound simple but, Is this to backup HPS usage or something more serious?
It sounds to me as if these are just symptoms of good growth under HPS.
No Z, this is just some interesting info about how light outside the visible spectrum influences plant growth. At least it's interesting to me, and it darn well should be to anyone thinking about grow light design. We were talking about it in SnSstealth's LED thread, but I thought it warranted a thread by itself.