Hi -need new pump - Bought house 4 yrs ago - 16X32 In-ground pool - 4'shallow & 8'deep - Have Hayward Pro series sand filter Model S244T with 300lbs sand. Pump sits about 2 -3 ft above water line with discharge running up to pump house roof (8' high) to home made solar heater using 1.5" black PVC pipe (10-12 rows each 16' long). Pump sits 10' from skimmer and there is one skimmer and one deep end drain. The guy who put the pump in bought a Craftsman 1.5 HP and it has ran OK till now. He had it on a timer to go 15 min on and 15 min off for 14 hours. In reading posts I have seen where people with similar pools get by with 3/4 HP pumps. I am looking at the Hayward Max Flow II as it seems a good value. Can anyone tell me their opinion? 3/4 HP or 1 HP or 1.5 HP ??? Hayward or spend more for better? My electricity rates are only .06 kwh Thanks