Well, I did it. I ordered a Pentair SuperFlo variable-speed pump for my 26,000-gal. in-ground pool, along with a Stenner Econ-T for chlorine injection. I also plan to do a bit of re-plumbing at the pump/filter and add an existing NG heater. I have a couple questions about flow meters. Should I have one in order to dial in exactly where I want my optimum flow to be with the VS pump and heater? And, where in-line should the flow meter go? Pre-heater or post-heater?