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Thread: Green Pool, CC reading 0

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    Green Pool, CC reading 0

    I am helping a friend sort out her pool, which is green. We are slamming, and she is keeping a record every two hours, and lost about 4ppm overnight, so we know something is eating her chlorine, not just the sun.

    Odd thing is, using the Taylor k-2006 we are getting no CC reading at all. Doesn't even go the tiniest bit pink after adding the 5 drops of R-0003. Can this be right? Never come across this with a green pool before.

    Her PH was way too low, so we added some washing soda before starting the SLAM. Have convinced her to keep her hands off the PH test for the time being, high chlorine will swing the result.
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Re: Green Pool, CC reading 0

    Can this be right?
    Yes. CC's of 1.0 ppm or greater indicate the need to shock but the CC level during SLAM can vary from Zero to quite high. Stay the course
    high chlorine will swing the result.
    Right on, Italian bro'
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Green Pool, CC reading 0

    Quote Originally Posted by duraleigh
    Right on, Italian bro'
    English sister actually I just live in Italy.

    The CC read 0 even before we started the slam. However, I am sure there must be organics in there to give the overnight loss.
    400,000 Litre in ground infinity pool, with 40,000 litre holding tank (116 235.703 04 gallon). Vinyl liner.
    Two Astralpool Cantabric sand filters, 900mm diameter, each with 550kg of sand.
    Two ESI MP6 1.5kw 3 phase pumps.

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    Re: Green Pool, CC reading 0

    Oops!
    high chlorine will swing the result.
    Right on, English Sis!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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