might be cheaper to buy a speed control for the fans instead of upgrading or downgrading. then you can adjust. hope it works out for you. fyi i got a speed control for 30 bucks at the hydro store. good luck
jbrand Reviewed by jbrand on . suction problem???? When I turn on carbon filter the suction is tearing the mylar off the wall... I have an intake fan 6 inch and out take fan is 10 inch... mylar is stapled down and taped...???? Rating: 5