I'm trying to decide which pool pump to purchase and if a 2 speed would work with my set-up. I was looking at the Pentair Whisperflow with a 1/2 hp motor but can't figure out the two speed option. Low speed seems like it wouldn't help most in-ground pools. Thinking about 2 turnovers a day and running the pump for 20hrs/day.
In-ground lazy L pool - 29,025 gals
Head in ft - 49
Sand filter - Sand - SD-60, Max flow rate - 60, filter area - 2.3
Chlorine generator - Pentair IntelliChlor - IC60
1.5 inch pipe size
29,025 gals x 2 turnovers = 58,050 gals
24 hrs - 2,419 gph - 40.3 gpm
20 hrs - 2,903 gph - 48.4 gpm
16 hrs - 3,628 gph - 60.5 gpm
Please let me know if I am missing any information, and I certainly appreciate your thoughts and advice.