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  1. L

    low speed pump: double time not = high speed filtering

    I wish I'd found this site long ago.... A few years back I replaced a dead motor with a 2-speed whisperflo (1.65 SFHP). I find that at low speed, even running 24 hr/day, I don't get good filtration. At high speed for 10 hrs/day I can. (One difficulty is that in summer my pool can get > 90...