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Thread: Timing Questions

  1. Back To Top    #1

    Join Date
    Feb 2015
    Phoenix, Arizona

    Timing Questions

    Hey guys,

    I had a couple general questions regarding recommended timing on chemicals.

    1) How long do I wait after adding chemicals before adding other chemicals of different types?

    2) How long do I run my pump after adding chemicals to make sure the water is ran through enough?

    3) How long do I wait after adding chemicals before retesting?

    4) How long to wait to swim after adding chemicals?

    Thank in advance.
    10,000 Gal, IG Pebble, Hayward Pro Series Sand Filter, 0.75kW Hayward Super II Pump, Rebuilt 2012 (California Pools), Baracuda MX-8 Cleaner

  2. Back To Top    #2
    jtaves85mcss's Avatar
    Join Date
    May 2012
    Cincinnati, OH

    Re: Timing Questions

    In general, just 30 to 45 minutes with the pump running throughout.

    If you are adding Chlorine/bleach in normal doses 30 minutes is fine. If you are adding Chlorine at SLAM levels, you will need to confirm you are in range for your CYA levels before getting in the pool.

    Do not test Ph if your Clorine level is above 10ppm as FC levels above 10 mess up the Ph test.
    Pool: IG 22k- 16x32 clipped corners- vinyl liner, w/ a great board. Built in 3/99, new to me 2/2011.
    Equip: Hayward 3600 DE filter, Hayward CL-200 Chlorinator (empty since 7/5/2013).
    K-2006 Test kit with Speedstir
    Located in Cincinnati, OH. TFP lurker since 9/2011, BBB interested since 5/2012 and converted 7/2013.

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Timing Questions

    For all of the waits, 30 minutes for liquid chemicals, an hour for solid/powdered/granular chemicals. Except that salt should be 24 hours, and CYA should be a week before testing and neither requires a wait before swimming.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4
    aussieta's Avatar
    Join Date
    Jan 2014
    Langwarrin, Victoria, Australia

    Re: Timing Questions

    i dont add calcium hardness and baking soda on same day
    i once added them too close together (as in immediately) and it made my water cloudy for days
    SWG inground peanut shaped painted concrete pool
    50,000 litres 13,000 gallons
    Lincoln Salt Chlorinator, 25 gram cell Sand Filter
    Taylor K2006-C test kit, Taylor K-1766 salt test
    are you taking care of your pool or is the poolshop taking care of you

  5. Back To Top    #5

    TFP Guide
    Kiss4aFrog's Avatar
    Join Date
    May 2013
    Hudson, WI

    Re: Timing Questions

    +1 on Jason's timing.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. May 20 - opened for summer
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit -
    Please help keep the lights on so we can be here for others, become a TFP Supporter!

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