For flow and power consumption reasons, I'm considering making a change for my main system pump from the PCX-55 to the Reeflo Dart. At first glance, it seems that I may be ?doubling? my flow with an 8' head - and potentially consuming far less wattage. I know the spec for the GENX pump (an Iwaki knockoff as far as I can tell) says something like 170W - but my experience has been more like ~220-240W. Currently, I use the pump to feed a manifold that serves my main tank, my skimmer, my fuge, frag ...