BTW, I intend that air for the cooltube would be drawn in from outside the grow area so as not to need deodorizing. Here's how mine is setup: http://boards.cannabis.com/showthrea...t=88985&page=2

Much smaller area than yours of course my same principals apply. In my pictures the carbon scrubber gets attached to the Dayton fan in the top corner.
doco Reviewed by doco on . CFM backpressure i was reading this on another thread fans are tested without ducting which give them the cfm. The thread also mention that if you use ducting, it will cut the cfm by half. No one on that thread asked if it will cut more than half if ducting and carbon filter is use. It got me thinking since i just upgraded and i need a fan that will cool 2000watt in a 64 cubic feet room. Any input on this would be great. thanks in advance Rating: 5