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Thread: Too MUCH CYA?????

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    Rockcrawler's Avatar
    Join Date
    May 2007
    El Paso, Texas

    Too MUCH CYA?????

    I have been using Bleach for the last year, my CYA dropped down to 80 this summer after draining and refilling, but it is back over 100 now, also I have to add about 1 quart of acid a week to keep the PH at 7.2, am I doing anything wrong???

    13,000 IG Plaster, 2hp whisperflo pump, 48 sq in pentair DE Filter, 1 skimmer, 2 eyeball outlets, 200 sq ft solar panels on second story, Auto Pilot SWG-36, Polaris ATV Cleaner

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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana
    CYA can't go up unless you are adding it, either via stabilized chlorine or directly as stabilizer. If the water is anything less than crystal clear, the turbidity test will read high. I experienced this first-hand last spring when I tried to figure out why my TA had dropped quite a bit over the winter, while my CYA was right where it had been in the fall. Even though the water looked clear, it had enough junk in it to cause the CYA test to read high.
    TFP Moderator
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  3. Back To Top    #3
    Please post a full set of test results. Also please list all forms of chlorine you might be using besides bleach. If you have not added any CYA then perhaps you are shocking with a stabilzied chlorine such as dichlor. This will also cause your CYA to rise.

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