Try putting the "air in" fan further away from your exhaust fan. I imagine your exhaust fan is sucking the air in fans air out, before the air in fans air has had a chance to circulate your in tent, leaving behind the humid warm air. Try organizing your fans so they are at opposite sides or the air in fan is at the bottom, while leaving the exhaust at the top to get the warm and humid air out. I believe 8 inches apart is not ideal, you should have a cross flow effect happening, with the fans as far apart as possible. Hope this helps,.... Organoman.