need some help

you have to measure the temp. during on cycles and off. The only reason to pump cool air in, is if your running super hot. usually pumping out through the top and pulling in from below is the easiest to maintain. Also, stale air gets pumped out, fresh air gets pulled in. It all depends on the temp. of the surrounding area. If its 80 degrees in your room then your box will be about the same when the light is off. When it comes on, your going to jump to almost 100 degrees, therefore have your fan on a timer to coincide with your lighting. Got it!!

thanks so pull the air out of the light hood and just suck in fresh air fom out side or the ac