Nah, it's not too much heat, the temp is a perfect 76 in there, top to bottom, and the mh lamps are like 18" off the top of the plants. There are CFL's but they're far enough away too, I think it's just the plant kinda freaking out due to the FIM. They look better, now, but it's darkness in there currently so I'll try to snap some photos later tonight.