What Type Of Inline Fan For A Cool Tube?

i got a 6x6 growroom with a 600w hps in a cool tube. I need advice on how to cool it, i got ducting already. basically need to know how strong of a inline fan and what type (I may add another 600 in the future). I heard something they make something that sucks the air out. positive rep for good help

http://www.canadianwholesalehydroponics.com/products.cfm?cat_id=14&show_products=1&catpage=2 these are pretty good

Hey CS,

IMO, the best inline fans are 'mix-flow' fans, designed for mainly residential use when ducting air around houses. These fans run much quieter than centrifugal fans, are much more efficient, and deal well with pressures (i.e. pulling through a carbon filter, etc). Check out this flyer from mountain air to see what they look like (page 4);

http://www.mountainairfilters.com/images/MA_Fan Booklet.pdf

I run one of these and it's brilliant!

TTK

active air 400cfm for $144.00. hydrofarms.com. I'm just not sure about cfm i know there is a formula somewhere

i dont wanna spend too much, and im not gonna bother with a carbon filter, i just say theres a skunk living under my house