Quote Originally Posted by criom
crap the BGH guy just emailed me back and said the smallest fan i could probably get away with is Dayton 265 cfm 75$

so that brings the total to like 460$....aaaaaaaaahrg
I hate to second guess the guy... but 265cfm is big enough for a 795 cu ft grow op main exhaust fan. Holy moley. What's your cooltube diameter?