I have a 72G bowfront and I'm still in the process of building the sump and overall flow. I have a 30G sump/refugium area. I was doing some research and I was thinking about buying the Quiet One 4000 for my return pump rated at about 750gph at 4ft. and a Hydor Koralia 3 for flow. I plan on using it along with a modded MaxiJet 1200 for 1600gph or 2000gph (not quite sure which propeller to use yet) and maybe my PowerSweep 20 rated at 165gph. Any advice on which combination to use for my future mixed tank?