not a whole lot man. My tent is upstairs and dont get over 72. And my can fan is only on 3. But i use a little heater outside the tent blowing toward but pretty far away to my intake vent works good. Those light are pimp. They got uv which not many lights have. Especially at that price. the way mine is set up is I only have my filter in the tent up as high as i can get it and got it lined up with the space between the bars. If you got all your stuff above the light should have no problem with the light touching the sides. But i dont know your set up
i do have my pipe running thru my roof not the side as well