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Thread: question on when to chlorinate and when to test

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    question on when to chlorinate and when to test

    I am a new converter to BBB and have been loving my taylor K2006 test kit! I have learned more about my pool in 2 weeks of finding this website than the previous 5 years of owning the pool.

    I typically run my pump on a timer that runs 10am to 6pm and that's always worked fine for my pool.

    water is crystal clear

    most recent testing levels
    fc 3
    cc 0
    ph 7.6
    alk 100
    ch 200
    cya 35
    temp 68 (brrrrr!) been cold and rainy here in new England.

    question 1:
    does it matter if I do my daily chlorine and ph testing in the am BEFORE the pump is turned on? ok for the other tests too?

    question 2:
    does it matter WHEN I add my daily dose of 12% beach? I always want to chlorinate when the pump is running, right?

    thanks!
    25k, IG, fiberglass walls and plaster/cement steps and floor, DE, 3/4 HP Heyward motor, Heyward automatic chlorinator, Pool is about 20 years old.

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    Mod Squad woodyp's Avatar
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    Apr 2010
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    Re: question on when to chlorinate and when to test

    Yes, make your chemical additions with the pump running. You should be circulating for a while before doing your testing-especially for FC. Morning additions will be fine as long as you maintain your minimum FC level BEFORE the sun goes down.
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    JasonLion's Avatar
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    May 2007
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    Re: question on when to chlorinate and when to test

    It is best to have the pump running for 30+ minutes before testing the water. It is also essential that you have the pump running during and for 30+ minutes after adding chemicals.

    There are some very small advantages to adding chlorine in the early evening. That gets you the most effective time before you start losing chlorine to sunlight.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: question on when to chlorinate and when to test

    thanks
    25k, IG, fiberglass walls and plaster/cement steps and floor, DE, 3/4 HP Heyward motor, Heyward automatic chlorinator, Pool is about 20 years old.

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