well from what I have messed with (400w hps AC hood) it is not too hot at all. have you picked up a hood yet get one with 6 inch in line duck hookups. and hook up hose with a quiet fan...:stoned:
sdstoner Reviewed by sdstoner on . Heat output difference 250hps or 400hps? My grow room is 2' deep X4' wide X4'high I will only have limited means of ventilation ie, computer fans for noise reasons, and passive intake. I am only goin to growing 2-3 plants at a time from clones for personal use. I know the 400 watt will provide thicker heavier buds and heavier yeild but is it worth it for the extra heat? Or would the 250 be sufficient for my use, with less heat output? Rating: 5