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Thread: Added CYA Stabilizer. How long to wait to test?

  1. Back To Top    #1

    Join Date
    Jun 2016
    Osawatomie, KS

    Added CYA Stabilizer. How long to wait to test?

    My CYA is measuring about 30 PPM. I use a SWG, I want to get to 60-75. The last time I added Stabilizer, I way overshot it and had to drain down the pool to lower the reading. I've seen several methods to add stabilizer; sock in a basket, sock over a return jet, dissolve in a bucket and add slowly to the skimmer line (what I did last time).

    This time I'm going to go a little slower, I don't want o overshoot again. So, I put about a pound in a sock in the skimmer basket. It totally dissolved in 24 hours. My question is this:

    Even though the stabilizer completely dissolved out of the sock, do I still need to allow time for the CYA level to rise to get an accurate reading? I understand that the liquid stabilizer can be measured almost immediately after adding (allowing for turnover), but I can't determine if I need to wait using tis method. I've seen people say that the stabilizer gets stuck in the filter and you need to allow time for it to dissolve, but if it is gone out of the sock...
    My Pool: 26,000 vinyl, CircuPool RJ-45 SWG, Pentair Variable Speed Pump, Pentair 420 Cartridge Filter, Polaris 360 w/booster pump

  2. Back To Top    #2
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Added CYA Stabilizer. How long to wait to test?

    It should show on the test 24 hours after it is dissolved.
    TFP Moderator
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  3. Back To Top    #3

    Join Date
    Jun 2011
    Long Beach, CA

    Re: Added CYA Stabilizer. How long to wait to test?

    The amount you added will be difficult to measure since it only added around 5ppm of CYA to your pool. I would add 3 more pounds and see what the CYA measures after that addition.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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