Temps are fine, there is an AC blowing directly into the grow room and more than enough wind circulating through. There is little to no heat because of this, I am using CFLs.
No offense but all this information is in my profile, I am posting cuz of a plant issue - I have never had a plant leaf tip turn brown because I put the light too close because id never use a hot ass lamp that close to a plant.
I had some nute issues before, i flushed them all a week later they bounced back n looked nice - i took 1/3 of the nutes i usually use and put them into the gal of water that I water with - after watering with 1/3 nute solution the tips began to yellow and brown. The funny part is its not ANY of the other areas JUST leaf tips on ALL the leaves. I am kinda worried at this point I am giong to reflush if it doesnt look right in the next few days. I also am going to STOP the nutes im giving it and see if it continues for a week+ If it does then I know its not the nutes and it has to be something else.