My ballast is outside my box the only thing heating it up is the four bulbs the main one is the 400w hps in its ac hood and then there is one 85watt feit cfl and one 200w cfl and one 100w cfl there is a mini fan inside that oscillates and there is three 2.5'' holes for the neg air and one 6'' duct fan pulling gen air out of box and then the 4'' duct in the ducting for the air cool hood. I always see the ac hood with both ends using ducting never really thought to leave one as a exhaust for gen growing area as well. Anyone have issues with moisture in the hood or over the bulb? Not saying I am imagining it to be that humid but any kinda makes me worried about the 70buck bulb and all the fixings.. any thoughts would be appreciated.:jointsmile: