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thanks guys, Maybe i will toss another outtake up top and toss a cpu fan into the passive intake. Any advice on what the interior should be? reflective material or paint.. I have a little grow shop a bike ride away which i'm sure i could check out ,but looking for the most effective without...

First time grow 150 watt hps - sun system 18" deep, 2 ' wide, 4' tall 120 volt pc fan taking air out at the top a passive intake near the bottom. Made of wood. I am wondering if the small pc fan will be enough to keep it running cool. Not sure how hot the 150 watt gets when running in...