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Thread: Too soon to test CYA?

  1. Back To Top    #1

    Join Date
    May 2016
    Southeast, NC

    Too soon to test CYA?

    I used PoolMath to calculate how much CYA was needed to raise it from 30 to 50 and it called for 28oz of stablizer by volume. I added 3 cups of grandular stabilizer in a sock in the skimmer on Friday and last night the sock was empty so I removed it. Tested the CYA this morning and it was only 40. Is it likely to test higher if I retest this Friday even though there is no more in the skimmer to dissolve?
    18 by 36 in ground vinyl liner pool, hayward sand filter and pump, 22,000 gallons, TF-100 test kit with speed stir (I highly recommend the speed stir), Dolphin S-300

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: Too soon to test CYA?

    Yes, it usually takes 24 hours after it is dissolved for the CYA to show up fully on the test.

    More here, Pool School - Recommended Pool Chemicals
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