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Thread: CYA is below 20....Am I reading it right???

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    CYA is below 20....Am I reading it right???

    OK I have a TF 100 and while testing the CYA I am looking directly down the tube, I cannot make the black dot dissappear. I just want to make sure I am looking at it right before I start adding stuff. Also while im here, my readings.....

    Ph 7.5
    Chlorine 1 ppm
    TA 80

    I plan on adding liquid bleach using the pool calculators recommendations and water conditioner for my CYA. Does this sound right?? Or will the bleach raise my CYA also???
    17100 Gallon AGP, Sta-Rite 150sq ft ModMedia Filter, Sta-Rite 1.5 hp Pump

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    Join Date
    Feb 2008
    Flower Mound, TX

    Re: CYA is below 20....Am I reading it right???

    Sounds like you have no CYA.

    Use the pool calc to find your CYA dose and add that amount. Bleach will not add CYA.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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