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Thread: Incorrect PH readings with High chlorine

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    Incorrect PH readings with High chlorine

    Hey guys/gals,
    Well, I must say I am so freekin happy I found this sight! I was another new pool owner following the cult of the pool store recommendations. I have fully converted my pool to the BBB system and I'm now a BBB snob .

    My question for the more experienced is how to test (and get a correct reading) for PH when chlorine levels are above 3ppm. Two of my test kits state that the readings are worthless if C is over 3ppm. I have a K-2006 kit that doesn't say anything about the chlorine level. Is the indicator in the K-2006 kit not affected by high chlorine levels?

    thanks in advance!

    oh, to they make an electronic PH tester that really works for pools and is not affected by chlorine levels?
    15.5k pool, BBB method used, Plaster in ground pool, DE filter, full sun in Boerne, tx, NO SWG.

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    Re: Incorrect PH readings with High chlorine

    You are OK to test pH up to FC 10. The difference is that you have stabilizer in your pool.

    Electronic pH testers require a lot of re-calibration, from what I recall from fish tank days.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Incorrect PH readings with High chlorine

    Confirming the above post, the pH test in the K-2006 is valid up to around 10ppm FC and becomes increasingly less accurate (it reads too high) as the FC increases above 10ppm.

    Electronic pH testers are pricey and have calibration issues. The one found in your K-2006 gets easier to read with usage and soon it will be little trouble for you.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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