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Thread: CYA question... Am I on the right track?

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    Join Date
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    CYA question... Am I on the right track?

    Hi guys... question...

    I have a CYA at 30... I shoot for 4 PPM for chlorine per the Pool Calculator and trouble free pool methods. Here is what I am seeing...

    over night loss test is 1 or less

    If I bring Chlorine up to 6 PPM at night approximately 24 hours later I am at 2 PPM (which is the minimum for my CYA).

    Should I bring up the CYA so that I am closer to the 4 PPM which is the recommended amount... Or would you say that after a hot day of full on sun that this is about right?


    Thanks guys...

    Also FYI
    PH - 7.5
    TA about 70
    Water sparkles, I just need some reassurance I am doing the right thing...
    Pool 16 x 33.5 Foxx Pool with rounded corners 3.5 at each end and 5+ in the middle (16000 GAL)

    Equipment - 300 LB Hayward filter with a Pentair SuperFlo pump (3/4 HP). Also Hayward H series Heater and a dedicated jet for a Polaris 280 with a booster pump (3/4HP). Hayward Chlorinator CL200.

    Pool has Main Drain, 2 return Jets with 1 inch eyeballs, a skimmer with floating weir, and the dedicated Polaris jet. Also has a valve for the Waterslide.

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    pwrstrk's Avatar
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    Re: CYA question... Am I on the right track?

    Yes the hot weather, sun, water temp all contribute to FC loss. Try going up to 40 ppm on the CYA.

    What is your CC ?


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Richard320's Avatar
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    Re: CYA question... Am I on the right track?

    That sounds normal, but higher FC loss than I'd be happy with. I'd take CYA up to 40 or 45. Leave yourself a little breathing room so you can use pucks in a floater if you leave town for a vacation.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Mod Squad woodyp's Avatar
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    Re: CYA question... Am I on the right track?

    You could very well need to raise your CYA level to avoid so much of a daily loss. Your minimum and target levels also go up if you do. Anything over 3 to 4 loss is excessive without a heavy swimmer load.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    BoDarville's Avatar
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    Re: CYA question... Am I on the right track?

    Be sure to check and clean the skimmer baskets and pump strainer baskets. These can harbor trapped debris that may not be visible in the pool but will still increase your chlorine consumption. I run a CYA in the 30's, which is on the low side given the Texas summer sun and a pool that gets direct sunlight for much of the day. However, I am militant about keeping these items clean. The most FC I have lost in a 24 hr. period so far this summer is 2.5 ppm. The more common daily mid-summer FC loss for me on a sunny day is around 2 ppm.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
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    Re: CYA question... Am I on the right track?

    Thnx guys... I will clean the baskits and check it agn. If needed I will bump CYA 5 at a time and retest. More to follow.
    Pool 16 x 33.5 Foxx Pool with rounded corners 3.5 at each end and 5+ in the middle (16000 GAL)

    Equipment - 300 LB Hayward filter with a Pentair SuperFlo pump (3/4 HP). Also Hayward H series Heater and a dedicated jet for a Polaris 280 with a booster pump (3/4HP). Hayward Chlorinator CL200.

    Pool has Main Drain, 2 return Jets with 1 inch eyeballs, a skimmer with floating weir, and the dedicated Polaris jet. Also has a valve for the Waterslide.

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