Having a fan on the bottom pointing directly up is a pretty good idea because the hot air would collect at the top, that's the theory. Does your 250HPS have an air cooled hood
MegaOctane12 Reviewed by MegaOctane12 on . temp control in my cab I have this cabinet that I bought and built and is in my closet. Dimensions are 19"deep 31"wide 53"high. Light is 250watt HPS. Temp inside without fans is around 110, yikes! I have a number of computer fans taking it down to about 90.5. I understand this is still too high, but there is not much more i can do cause i dont feel like taking shit apart and fuckin with it in mid grow. so i intend to take the proper steps in giving it proper temp next grow, which brings us to the question: I Rating: 5