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Thread: New Pool Owner--Questions about CYA

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    Join Date
    Apr 2015
    Location
    Phoenix, AZ
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    5

    New Pool Owner--Questions about CYA

    Hi Everyone,

    I am a brand new pool owner and learning the ropes right now. I am located in Phoenix, AZ. I have read Pool School a few times and am going to order a TF-100 kit.

    In the mean time I have been going to my local pool store to get the water tested (according to everything I've read here, this is a bad idea).

    The CYA levels are above 100. Around 120. I mentioned this to the pool store, but they said here in Phoenix that CYA is always going to be higher compared to the rest of the country and not to worry.

    Can anyone confirm this is correct? I am especially interested to hear from other Phoenix residents.

    Thank you!
    25,000 gallons, plaster, sand filter, in-ground

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    Mod Squad JVTrain's Avatar
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    Feb 2014
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    Central Minnesota
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    Re: New Pool Owner--Questions about CYA

    While it's true that in hotter, full sun climates, CYA levels should be higher, that's a bit higher than recommended. See Chlorine/CYA Chart

    How high your CYA should be depends on your type of chlorination as well. Bleach or SWCG?

    When you get your kit, dilute your pool water 1:1 with tap water to get a more accurate CYA reading. Multiply the result by 2.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Join Date
    Apr 2015
    Location
    Phoenix, AZ
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    Re: New Pool Owner--Questions about CYA

    Thanks for your advice Joel!

    I have bleach chlorination.

    Once I get my kit, I will test everything and take it from there.
    25,000 gallons, plaster, sand filter, in-ground

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    Mod Squad pooldv's Avatar
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    Aug 2012
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    DFW, TX
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    23,994

    Re: New Pool Owner--Questions about CYA

    Welcome to TFP!

    Here are some intro Pool School articles to read while you wait for your test kit
    TFPC for Beginners
    ABC's of Pool Water Chemistry

    Here are the Recommended Levels for your pool.
    Here are the Recommended Pool Chemicals
    Use PoolMath to figure out how much to add.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Divin Dave's Avatar
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    Oct 2013
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    Longview, Texas
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    Re: New Pool Owner--Questions about CYA

    Im sure thats what the pool store said and Im sure they are wrong.
    Its true you may need 'slightly' more CYA because of the heavy sunlight and UV in Phoenix, but 120 is not ok.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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