Okay my canopy is mostly closed except there is a 4 inch gap along the back of the canopy that runs the length of the canopy and also two fans. Right now the blow in onto the lights. Should one blow in and one out, both in, both out? I plan to get a little clip on fan as well. I have just seen so many different fan setup and trying to figure out what is best. Seems to me I would want the fans blowing the hot air out. I have (2) 250 watt mh so it does get toasty. So far the temp hasn't gone over 82 but everytime I open the door I get blasted with hot air. What do you guys think? BTW this is on the new 90.