Also, if i do this, i'll probably be venting into the attic directly above. To reduce heat in the closet...i was thinking about putting my ballast in the attic and running the cord through the ceiling down to the lamp. It gets very cold in the winter and very hot in the summer up in the attic. Would that stress the ballast too much? i'd have some fans blowing the heat/vented air around the attic to keep any heat signatures down.

thanks.
Skeet