running a 1/2 hp motor with a 26" sand filter

[newtopools]

I did find these 2 #'s on the pump
RPM 3450/1725
AMPS 16.4/4.4
my pool is 25,700 gallons

my filter is 26"
the pump is 2.5 hp and 1/2 hp
I always run it on the 1/2 hp

Any information on how long I should be running my pump I'd appreciate.
Sharon

[anotherpyr]

You would need to know the manufacturer and model number of the pump in order to look up the performance specs online. You can get big differences in the flow rate based on motor rating (max or up rated vs full rated) and pump design.