In order to get a turn over in 8hrs, I probably need the 72GPM, but there is not much price difference between various sizes so I am wondering if I should buy one size too big, to reduce backwash frequency? (water/sewer costs a lot in my area)
Hayward Progrid prices on Amazon:
24 sq ft (48GPM)-->$552
36 sq ft (72GPM)-->$525
48 sq ft (96GPM)-->$601
Also not sure what motor horse power are these GPM rates based on? my pump specs are in the signature.
PS: reason behind changing from cartridge to DE: I get floaties at night, also pool is slightly cloudy during the day (despite multiple slam attempts, and proper chemical levels)