if you have access to an old computer that you don't want, break it up & get the fan, make a little hole in ur growbox & whack it in there. it's good for cooling but also good for circulation (keep it on even when the lights off). if you can cope i definitly recomend a 250W MH, i got mine for £85 from seaofgeeen.co.uk (but ur prob in america, like everyone else). my advise would be: get a 250W get some wood & build a bigger box, if it's too hot to keep your hand under the light (palm facing down) then it's gonna burn ur plant