sounds like you're working on a bedroom grow...ya can't hide a grow from mom. no way...

and using hid's in such a closed environment would be better suited for baking bread...iow, it's gonna get way too hot to control w/o an elaborate vent system...which is rather noisy by itself, let alone the ballast hum from the lights. then there's the smell...ozone/neg. ion gens work great but also are somewhat noisy and an unusual item around the homes of most...