Hey, im starting this week to really get setup as well, would love to know how that works out for you in the heat department. Well, sounds better than what im about to try at least . I paid like 15 bucks for it homedepot, its a bathroom fan, says it pushes 50cfm, has a sound level of 4.0 (still loud as hell i hear it 20 feet away). Im just putting it on the floor of closet with a hole in tarp for it to exit air without light escape hopefully. So please keep some updates going on temp and and if possible pics. Do you gurus think thats enough to keep temp regulated in a closet using a 400wattHPS, one of those types of fan on the floor. I can feel the air from underneath the door lik 10 feet away so its deffinitely pushing air but enough to keep the heat safe in a closet i dont know.