Ok, so I'm looking to cool this 600 watt I have and am wondering what inline fan would be good enough for it, this is a closet set up, and temps getting hot and still have left door open but not good enough and would like cooler temps. Also, I have a 400 too, if I set that up with the 600, what would be sufficient to cool both lights? Any help/advice/comments, anything, is appreciated.. Thanks