what size extractor fan would i need in a flower room 6ft x 6ft x6ft light by 2 x 600watt hps, i have a 4 inch at the moment and the temps are way to high bout 36 -38c my intake air is about 20c want to get it sorted bofore the ladys go in to it would a 6in extractor fan do with a 4in on the intake make much difference..need some advice before i buy the fans also i have 2 air cooled hoods with out glass so might get glass for them and use them instead of the standard wing any advice.
