How do I find my GPM?

[Ronald U.]

I have an A. O. Smith Century Centurion B150 2 hp. pump. I don't see GPM on the info. plate. How do I obtain GPM so I can calculate how long it takes to turn over one full pool volume? Thank you all. RU

 

[jblizzle]

Calculating flow rate is not trivial and generally there is no need to know it. There is no reason to try to have some minimum number of turnovers in a day, that is an old pool-ism. New research suggests you actually need very low turnover and only a few hours of pump run time is fine. See the Determine Pump Run Time article in Pool School.