Thanks texas grass; I think I will get the 600 watt in a cool tube, and if need be I'll add the 400 watt I already have to get to a 1000.(if heat is not to big of a problem) I still think I'm going to use mylar because I've already got some sprouts and don't really want to wait for the paint to dry. I was wondering though if you guys prefer inline fans or one of those blower type fans? If it doesn't matter the inline ones seem to be a little cheaper, but I wanted to know which do you guys prefer. Thanks in advance