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Thread: Question about CYA

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    Question about CYA

    My CYA reading shows zero. I poured 5 lbs in a sock yesterday and it dissolved, shouldn't I have some sort of reading by now? Thanks
    18x37 IG 22,500 gallons...Vinyl Liner...Hayward EC-65 DE Filter...Hayward 1HP Super Pump...Aquarite SWG...TF-100 test kit.

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    Mod Squad tim5055's Avatar
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    Re: Question about CYA

    Quote Originally Posted by harpfamily View Post
    My CYA reading shows zero. I poured 5 lbs in a sock yesterday and it dissolved, shouldn't I have some sort of reading by now? Thanks
    Not necessarily, it can take up to a week to register on a test.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Richard320's Avatar
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    Re: Question about CYA

    Quote Originally Posted by harpfamily View Post
    My CYA reading shows zero. I poured 5 lbs in a sock yesterday and it dissolved, shouldn't I have some sort of reading by now? Thanks
    Not necessarily

    As it says in Recommended Pool Chemicals
    Solid cyanuric acid can take up to a week to fully register on the test, so it is best not to test the CYA level until one week after adding some.
    Pool math says 80 oz of stabilizer will only raise CYA by 27. Most testers won't read below 20, some below 30. Even if the stuff is 75% dissolved, you still won't get a reading.
    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.
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