I have a general question involving the intake and outtake fan cfms. I currently have 2 identical fans in my grow cabinet. 100 cfm each, 1 for intake, 1 for outtake. I just bought a charcoal filter for the outtake fan. Now here comes my Question. The flow of air on the outtake fan has decreased because of the filter and the intake flow of air is still the same. Is this a problem? More air coming in than out?