first off thanks for the response Dreadscale. I have an exhaust from the air cooled reflecter but I don't have intake into it. Will that make a big different if I put that on? The only other problem is that I am out of holes to get some outside air. What if I set up an intake into my hood and then that would lead to the outside through the exhaust. Also just to add I dont currently pull air from anywhere but I do have a 3 by 3 hole into my space. I'm doing this grow in an attic so the spot leading up is always open. Thanks again for your help.