ok i am making the move from the closet to a small room in a basement. i am using aircooled hoods for my 600 watt light. i am going to run a second 600 watt after i get some extra money to replace old appliances in the house that suck power. my question is i have an 8 inch fan to cool both lights, ill probably use a 6 inch for the single. i want to run c02, so my question is if my room is completely sealed, can the fan exhausting the heat from the lights all the exhaust i need? or do i need another exhaust pulling out of the room? i have a small fan and carbon filter that i can do this with. i was also thinking if i can leave the room the way it is, i can just have the filter running in the room to clean the air. is this plausible?