I'm confused about the pressure increase. Could someone help me here? I thought that a lower-powered pump would decrease head loss and thus the total dynamic head would decrease? I am considering a switch from a current 2hp Whisperflo, which is a good pump running well, to save on my bills ($0.35/kwh here!), but my filter is already running at 21-22 psi with the solar off and 28-29 with it on. I don't want my pressure to increase.