Howdy all. Another question for the project i will soon be embarking on. i think that in my indoor grow, i will have good control on temp/rh and was wondering if it makes sense to use a an exhaust/w carbon filter that will pullback around and blow back into the room. I will be running CO2. released above lights and the exhaust would be located center/top and come back on the side just below the lights. this make sense? i want to limit the new air that comes into the room.