With that cool tube I could get it 6 inches from plants if the room is A/C and 2 or 3 good fans blowing right across the topps of your plants. Get a few fans like small oscilating ones to blow back and forth.

Without fans your cool tube is getting tooo hot that's why the light green burn on closet ones. A light with no cooltube could be raised up almost a foot higher.

OH and awsome buds there man.
LOC NAR on probation Reviewed by LOC NAR on probation on . need fast help The problem I'm having is that ever since the temps down here have been more spring like instead of winter the leaves that are directly under the light are starting to get a little burnt; but all the other surrounding buds and leaves seem to be fine still. A little about my setup: I'm growing 2 ak48 in dwc rubbermaid using the scrog method in the 4th wk of flower, growing in a 4'lx3'wx4'h cab (and I already have the light raised about as high as it can go) with a 600w hps in a cool tube Rating: 5