This pool is pretty simple, nothing fancy 2 returns is all (no spas, infloor cleaning,etc) each return Y's off at the pump into 2. We eliminated the solar when we redid the roof so my pump head requirements have dropped a lot! my math shows (calculated the gallons a couple of ways) 15k gals max. turnover needed would be 31-32 gpm. avg head only 35 foot. 1.5 plumbing
energy rate is around .10/kwh. Doing the match VS seems to have a long payback period for this and a 2 speed 3/4 pump seems a good compromise. The pump curves of the pentair superflo 3/4 2 speed SF-N2-3/4A , seem to match this pretty well. Does this sound about right? tough to find this pump online though it seems...a google doesn't bring it up all over the place.
Also i want to go back to a sand filter (from cartridge), i've heard good things about zeosand. any suggestions there to match this combo?
Thanks for any suggestions!