hi this is my first post and need help. im about to set up my 10x10 but dont know what to do about ventilation and co2. i have 4 1000w, cool air hoods, 8 in fan, can filter 75, co2 regulator, and 2 a/c units. im trying to stay away from the a/c units because of cost and its not that hot yet. how do i keep my room cool and ventilated without loosing the co2. can someone show me a diagram. thankyou!!