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Thread: overnight test

  1. Back To Top    #1

    Join Date
    Jun 2009
    Columbia, SC

    overnight test

    Should I leave the pump running (without pumping in chlorine of course) when doing the overnight free chlorine test? Is there a specific setting I should use? Recirculate perhaps?
    20K gal, vinyl, 3/4 HP pump, Hayward sand filter

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: overnight test

    Are you trying to kill off an algae bloom? If so, keep the water moving. Imagine you're dissolving the algae, it goes faster if you stir. If the filter is likely to clog up, recirculate. Otherwise, why use all that electricity pumping water and not get any filtration out of it?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: overnight test

    The only real criteria is that the pump should have been running for about an hour before you test, so if you get up an hour before the sun and turn on the pump (or have the timer do it) then test an hour later there's no reason to run the pump all night, Unless, like Richard said, you're fighting Algae.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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