I am currently running a 1000W MH 9" away from my plants which are no taller than 10". There is no sign of burn at all, yet they seem to be growing a little slow. With the inline vortex fan running 24/7, the temp runs a pretty constant 82 degrees F at the tops of the plants (room temp is around 75). Is my light too close, will too many lumens hinder the growth of my plants? Thanks!