New indoor grower. Question, I have a 190 cfm 4” inline fan with carbon filter. Using the inline fan to exhaust air outside. It seems strong enough to pull cool air from the room and exhaust the tent, exchange air. I’ve been told I can use this set up but I’ve also been told I need an intake fan to pull air from outside. Here in Oklahoma it gets hot as you know what during the summer. I don’t want to have to buy an ac unit for the tent 3x3x6. Can I get away with using just the one inline fan for ventilation without pulling hot air in from outside? Nothing in ten yet. Been running it to see what the temp and humidity is with this set up. So far temp has a high of 84 and humidity of 62%. Lows have been 72 temp and 36% humidity. Currently it’s at 54% humidity and 74 temp.