I run the exhaust and intake fan on the same timer and adjust the timer according to the temp/humidity needs and that stays constant lights on/off. I run the intake through the bottom and snake it around 1/2 way around the tent and up one of the corner poles and about half way up the pole i tie off the intake line with a zip tie and let it hang down almost to the floor. I poke holes through the line that snakes around from where it comes in the tent to where it starts going up the pole 1/2 way around the floor of the tent to allow a little bit better air disbursement throughout the tent.