I am currently using a 100 hps i bought at home depot. Its an outdoor unit so it is sealed nice. I cut two holes, one for intake, one for exhaust. This way all the heat is collected in the housing and immediately vented. Keeping my box kool.
mine r a lil purple 2(white widow) im goin w/ high temps. stays around 83 consistantly but will jump up to 87 mid day. during the day now i take out one bulb(i have 6 cfl's) makes it 4 degrees cooler. i have a well sealed box with lower cool intake and high mounted exhaust fan. get a...