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Thread: CYA has been consistently low

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    CYA has been consistently low

    Hi I've been adding CYA (up to 5lbs now) and still can't seem to get it to register even at the 20 level. I'm using solid CYA in a sock in the skimmer. I put this in over a week ago...still nothing. Any other ideas?
    Laura
    Baltimore MD
    IG pool 25,000 gallons
    Cartridge filter
    Plaster pool

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    Casey's Avatar
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    Re: CYA has been consistently low

    How big is your pool? Can you update your signature and location please. It would help us out a lot! Thanks!
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Mod Squad jblizzle's Avatar
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    Re: CYA has been consistently low

    Please add your pool details and location as described HERE to your signature as it will help us help you.

    We would need to know the pool size to even start to offer ideas.
    Where did you buy the CYA? What is the strength listed on the bottle?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Casey's Avatar
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    Re: CYA has been consistently low

    Have you guys been getting a lot of rain? That could be why you aren't seeing an increase.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  5. Back To Top    #5

    Re: CYA has been consistently low

    Thank you I updated my signature with the requested info. I have the TF 100 test kit. Following are current readings

    FC: 7 ppm
    CC: 5
    Ph: 7.8
    CH: 420
    CYA: below 20
    Alk: 120
    Laura
    Baltimore MD
    IG pool 25,000 gallons
    Cartridge filter
    Plaster pool

  6. Back To Top    #6

    Re: CYA has been consistently low

    CYA strength 96%. Yes we have been getting a lot of rain (thunderstorms).
    Laura
    Baltimore MD
    IG pool 25,000 gallons
    Cartridge filter
    Plaster pool

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    Casey's Avatar
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    Re: CYA has been consistently low

    I think that that is your problem especially if you have been draining the excess off the pool.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Mod Squad jblizzle's Avatar
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    Re: CYA has been consistently low

    In a 25k pool, 5 pounds would have only added 24ppm of CYA ... plus given the rain ... I am not too surprised you are reading less than 20ppm.

    Add another 2-3 pounds to get you up around 30ppm at least.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Casey's Avatar
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    Re: CYA has been consistently low

    Be prepared to lose some of that because the rain isn't suppose to let up for another week!

    It's HORRIBLE!!! (That's my rant of the day!)
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  10. Back To Top    #10

    Re: CYA has been consistently low

    Thank u will give that a try
    Laura
    Baltimore MD
    IG pool 25,000 gallons
    Cartridge filter
    Plaster pool

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    techguy's Avatar
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    Re: CYA has been consistently low

    Would it be a good idea to aim for a 40CYA to allow for some rain dilution?
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    Re: CYA has been consistently low

    Quote Originally Posted by techguy
    Would it be a good idea to aim for a 40CYA to allow for some rain dilution?
    Wouldn't hurt.

    Also, just to be sure. One's CYA can also start disappearing if you have a leak. Folks who use autofills and are noticing a trending downward in their CYA can also suspect a leak. The only way to lose CYA aside from a loss over the winter in a closed pool is for it to be splashed out or emptied from the pool either through a leak or down the drain.

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