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Thread: I need help, never seen this before

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    Reddogdan's Avatar
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    Sep 2013
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    I need help, never seen this before

    I was trying to show my brother why he can't keep chlorine in his pool and hit a brickwall. He has been using shock and tabs for two years. I expected his cya to be off the charts. I ran CYA and it shows 0. This pool is 8400 gallon vinyl, above ground pool. I can understand now why he has no chlorine. But why does he have no CYA? He said he threw 3 bags of shock in last week and still no CYA.
    14.3k, 3 1/2-5 1/2, IG, Pebble Wet Edge Northshore Tahoe, Jandy 4 cartridge, Jandy 2hp variable, Pentair 320 inline chlorinator fed by a Stenner, Polaris 280, K-2006 test kit, Built 9/13
    Fill water: TA=90, PH=70, CH=90

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    duraleigh's Avatar
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    Re: I need help, never seen this before

    Perhaps the "shock" was cal hypo.....there is no CYA in it.

    What did he do with his pool over the winter? Did he put a cover on it, partial drain?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Reddogdan's Avatar
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    Re: I need help, never seen this before

    Good job, it is cal hypo and the pool was covered all winter.
    14.3k, 3 1/2-5 1/2, IG, Pebble Wet Edge Northshore Tahoe, Jandy 4 cartridge, Jandy 2hp variable, Pentair 320 inline chlorinator fed by a Stenner, Polaris 280, K-2006 test kit, Built 9/13
    Fill water: TA=90, PH=70, CH=90

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