Thanks but I dont think you have read the entire post (no worries, I'm guilty of posting while drunk too. ). I have already put the cooltube fan inside the box and there is already a vent in the back. As I said, doing that dropped the temps 10 degrees. I was thinking about doing what you suggested... dropping the fan from the inside top of the box to about halfway down (under the light) about canopy level. I think that might drop the temps even more. I dont want to cut more holes for fans if I dont have to... the lower the light bill the better. Also trying to keep it as light proof as possible (trying to stay stealthy). As it is right now there is no visible light during daylight hours and its only a slight leak reflecting off the back wall at night.