I think the comp fans will work, I am also going to make a carbon filter for it. I have been looking for a good strain and i think i have found it, Mazar. I am ordering them from Rhino seeds (Cannabis Seeds). This is a link straight to the seeds ( Mazar ). They are feminized I also like they high THC level. I am wondering about height, I have room for about ten 5-6 foot plants and don't want to waste space. Does any body know of a better strain: tall, high THC levels (like mazar or white widow levels), and good yeilds?