The customary method, in this case, would be to suck the air from the light and blow it out of the tent. An intake hole at the bottom of the tent is usually enough with no "intake fan". This is passive intake and works if your exhaust fan has decent CFM flow. YMMV.
Ocotillo Reviewed by Ocotillo on . Exhaust Vs Intake Hi, I would greatly appreciate some advice. I have enough money to buy an inline fan. I have a small grow tent (4x2x6). Is it better to exhaust my 400w HPS or Intake cold air. My room can stay cold with my AC unit. Also, if I exhaust, should I intake the heat right next to the light. I read that in-taking the heat can burn out the fan, and that air should be blown through the light. But my light reflector will not allow that. Rating: 5