So my 75g has a turnover of about 2 times an hour. I have a slight surface scum of white specs, decomposing food, and algae. Im going to be replacing my low flow pump with one which should push about 10 times the system volume an hour. Im expecting and hoping that this increased flow rate will remove the surface skum, and push phosphates to the refugium where I grow chaeto. Currently my PH sits at a steady 7.9. Is it safe to expect that with a higher turnover, and potential removal of the surface scum, greater surface agitation, etc, can I expect a higher PH and a better export of phosphates in the tank over what I'm currently getting with my 2x turnover?