Yeah there is a shelf that runs the length across the top. I could close the closet off but leave the shelf area open to the room and run the exhaust through the shelf. Would that be effective. I'm looking to improve from fluorescents. Maybe a 250? Conversion ballasts?Do you have a way to vent out the top of your grow area?
As do I and I don't have a problem either. My 425 cfm fan over kills it though. it can get down to 67 with lights on.I have a 5 ft high, 2 ft deep 4 feet wide tent and I use a 400w with no problems.