Hi 420! I have a 4'' inline 175 cfm carbon filter combo. My grow tent is 32''x32''x62''. I have the fan sitting on top of the tent with ducting inside attached to my filter. There is a question in here, I have it set up to vent smelly air out of the grow room so, the fan is set up to suck air thru the filter thru the ducting and out the top of the tent, is this correct? I have two vents at the bottom of the tent as passive intakes. Is this enough? My temps are staying between 84-88 degrees with humidity between 45-50%. I would like to get my temps down, should I place a oscillating fan inside to help with cool air circulation? Or place a fan on the outside of the tent to force air into the room? Any suggestions are much appreciated. I am growing bagseed, 2-5gal buckets and I have three soil grows in 1qt containers. The Hydro grows are 10 and 7 days old and the soils are 7 days old. Pics are poor quality.