[rds_sk8er420]

how about just blowing fresh air in? my small grow canet has a fan to blow in from the back, and deffinatly keeps it fresh in there and a good temp, i also have the door open in the day sometimes as, i read spending time with your plants is good(and there in my living room), the cabnet isnt completely sealed and there is about 2 1/2 feet above the ligths that i can move them up on pegs. so the heat has other places to go when the fan blows in.(I cover up the front of the box in the night fase so no light will make it in the cracks of the cabnet, fan can still blow fresh air in i made a duct from tinfoil)