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Thread: CYA Reading

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    Join Date
    May 2015
    Location
    New Milford, New Jersey
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    68

    CYA Reading

    Hi Everyone,

    So things have been going fine all season, I test FC & PH regularly, only use liquid chlorine (I have done great with the Wal-Mart pool essential), test TA & CH periodically and everything been great. I decided to test CYA this weekend and I am getting no reading, meaning its below 20????? My chlorine does not appear to be getting used up abnormally fast, what is going on? What should I do? As always, thank you in advance for your help!

    Adam
    17x34 and ranges in depth from 3 ft to 6 ft.; I think 20-22 thousand Gallons
    IG -Vinyl with Waterfall
    Hayward Super Pump 1.5 HP
    Pentair DE 60 Filter
    Hayward H300 Heater; Taylor K-2006 Complete

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    Mod Squad tim5055's Avatar
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    May 2014
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    Columbia, SC
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    8,495

    Re: CYA Reading

    Adam,

    I guess my first question would be what are your targets for FC? You are fairly well north, so not the blazing sun our friends in Florida, Texas and Arizona face so maybe your daily loss to UV is not bad.
    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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    Join Date
    May 2015
    Location
    New Milford, New Jersey
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    Re: CYA Reading

    At the beginning of season I got CYA to around 50, so target had been 6; do I need to add more stabilizer? Is there any other explanation?
    17x34 and ranges in depth from 3 ft to 6 ft.; I think 20-22 thousand Gallons
    IG -Vinyl with Waterfall
    Hayward Super Pump 1.5 HP
    Pentair DE 60 Filter
    Hayward H300 Heater; Taylor K-2006 Complete

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    OTPirate's Avatar
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    Oct 2013
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    Creedmoor, NC
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    989

    Re: CYA Reading

    You can try the R-7065 CYA (50 ppm) standard solution to rule out any problems with your R-0013. It is basically pool water with a CYA of around 50 ppm.
    Have you had a lot of rain? Splash out from kiddos in the pool?

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    Join Date
    May 2015
    Location
    New Milford, New Jersey
    Posts
    68

    Re: CYA Reading

    What is the R-7065 because I do want to rule out a problem with R-0013???

    Not a lot of rain but yes a lot of splash out, I have to add water almost weekly, did that do it?
    17x34 and ranges in depth from 3 ft to 6 ft.; I think 20-22 thousand Gallons
    IG -Vinyl with Waterfall
    Hayward Super Pump 1.5 HP
    Pentair DE 60 Filter
    Hayward H300 Heater; Taylor K-2006 Complete

  6. Back To Top    #6

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    Oct 2013
    Location
    Creedmoor, NC
    Posts
    989

    Re: CYA Reading

    Here is link to 2 ounce size of R-7065 TFTestkits.net
    Use it like pool water mix with R-0013, and you should get a reading of 50 ppm (give or take 5 ppm

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