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Thread: CYA drop

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    Join Date
    Jun 2015
    Phx Az

    CYA drop

    I have noticed after the last rains and after a month or so of splash out my CYA has dropped from 40 to about 25 or so. What made me check is the last few months I have been using 4ppm chlorine almost like clockwork. Now it has crept to 5ppm. This is full sun in Arizona. I have a full bucket of pucks just sitting here and I also have some CYA granules. Would you just add the CYA granules or would you float some tabs to bring the CYA levels back up? This is an AGP with a vinyl liner.

  2. Back To Top    #2
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Central Minnesota

    Re: CYA drop

    I would use the granules to get the CYA up immediately rather than waiting for pucks to dissolve. Save the pucks for vacation.
    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
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