*** Changed title versus starting a new thread. Trying to dial in my tent temps this weekend after I believe heat caused some seedling problems. Tent is 4'x2'x6' (48 CF). I have a 100 CFM exhaust fan running wide open and passive intake. 18 x 23w CFLs with each cluster of 6 under a reflector. I may need to pop some holes in each reflector to release some heat. Good or bad idea? Right now inside tent temp is holding at 77F. Outside room temp is 55F.