In my 10.5 gallon I am running between 400 and 500 GPH flow between my sump return and 3 powerheads on a wave strip. I have finally managed to get everything pointed the right way so sand is no longer flying around the tank. My 2 false percs, however are constantly fighting current. Will this be bad for them? Should I take out a couple of PH's? Should I turn them off at night so they can rest?