well rambler i took some pics of the fans that are installed on my box. these are my spares and they are almost the same size so if i was going to do a passive intake should i use all 4 of my fans for exaust? now the way my fans are set up atm you think that makes a good enough breeze in there or should i contribute one of my fans to blow around in the inside or will that kill any air movement that my plant has atm?