The pool store says my sta-rite dyna-glas 1 hp pump has bit the dust. The bearings are bad and they said since it's made of "pot metal", the casing can't handle the replacement bearings and will just cause the new set to go bad within a few months. The impeller also broke and it needs a new seal.
Someone gave me their old whisperflo 1.5 hp pump a few years ago and I asked the store about hooking that up to my exisiting sand filter instead. They said I could if I retrofit it with a 3/4 impeller. Then they said if the motor ever goes, just replace the motor with a 3/4 hp at that time. Does this all make sense?
I couldn't find GPM on my sta-rite to compare to the whisperflo pumps online. My filter says it max flow rate is 62 GPM but I saw somewhere online where it says the flow rate is only 44 GPM if you have 1.5" pipe.