like i said it was my first grow in an attic, during the summer time, temps were getting in the high 90s, at the time i didnt have exhaust vents only a single fan, basically for me it was a learning experience, after i got that single grow outa the way i moved and was able to expand to the set up i have now with alot more space and able to dial in for a better gro. Again when i was using that set up i wasnt on here didnt even know this place existed, really wish i did. Best of luck and happy token