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Thread: CYA Question

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    CYA Question

    My CYA is 45. So do I call it 40 or 50?

    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Texas Splash's Avatar
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    Re: CYA Question

    I round numbers like my taxes ... 45-49 would be 50.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: CYA Question

    Why not call it 45?
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    Re: CYA Question

    Im going by the cya/chlorine chat. There is no 45.

    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Mod Squad pooldv's Avatar
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    Re: CYA Question

    Always round CYA up to the next 10.
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    Re: CYA Question

    Quote Originally Posted by pooldv View Post
    Always round CYA up to the next 10.
    ^^This. The minimum numbers really are the lowest most people can maintain to avoid a problem. Meanwhile SLAM is a fairly conservative upper end. So there is really zero harm in rounding up your CYA number, but if you round down you could risk dropping too low. I suggest always rounding up the CYA number, even if it is nearly to the next line.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
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    Re: CYA Question

    Up it is. Or just add a bit more stabilizer to get to 50 i guess...

    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Texas Splash's Avatar
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    Re: CYA Question

    Yeah, plus with the CYA's +/- 15 ppm variance, we know CYA testing one of the trickiest, so I always find it best to err on the high side to ensure I have enough FC in the water.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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