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ca1ore · 02/07/2018, 08:59 AM

Depends a bit on what you are asking it to do. In my case, pumping up from a basement sump, the PXX models just don't cut it. For most aquarium applications though, I completely agree. I actually use the 50PXX to push water through my chiller, and I get more gph than the higher wattage 100PX - so volute and impeller design is absolutely part of the efficiency equation. My long held suspicion has been that if anybody made a DC pump for a pressure application like mine, the purported DC efficiency gains would go poof.

02/07/2018, 08:59 AM	#9
ca1ore Grizzled & Cynical Join Date: Apr 2006 Location: Stamford, CT Posts: 17,319	Depends a bit on what you are asking it to do. In my case, pumping up from a basement sump, the PXX models just don't cut it. For most aquarium applications though, I completely agree. I actually use the 50PXX to push water through my chiller, and I get more gph than the higher wattage 100PX - so volute and impeller design is absolutely part of the efficiency equation. My long held suspicion has been that if anybody made a DC pump for a pressure application like mine, the purported DC efficiency gains would go poof. __________________ Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs Last edited by ca1ore; 02/07/2018 at 09:06 AM.