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Thread: FC rise or operator error?

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    FC rise or operator error?

    i tested at 8:30 pm one hour after adding chlorine fc was 15.5. I tested at 5:00 am, 40 min after pump was on and got 16.5 fc. Operator error or is it possible that i should have waited longer than an hour after initial testing at 8:30 pm? Usually within 30-45 min of adding the results are dead on.
    IG Pebble sheen blue surf approx. 14k gallon, beach entry, 7' spa, 3.5 ton jumping rock/waterfall, Pentair 2hp whisper flo, booster pump, 520 cartridge filter, Stenner Econ T, 400k master temp heater, easy touch controls,TF-100 w/speedstir

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    Re: FC rise or operator error?

    Probably operator error but I suppose it is possible not to get complete dilution in 40 minutes but not very likely. Most of the time it is 30 min or often less.

    What target were you shooting for?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: FC rise or operator error?

    Quote Originally Posted by duraleigh View Post
    Probably operator error but I suppose it is possible not to get complete dilution in 40 minutes but not very likely. Most of the time it is 30 min or often less.

    What target were you shooting for?
    i was shooting for 16
    IG Pebble sheen blue surf approx. 14k gallon, beach entry, 7' spa, 3.5 ton jumping rock/waterfall, Pentair 2hp whisper flo, booster pump, 520 cartridge filter, Stenner Econ T, 400k master temp heater, easy touch controls,TF-100 w/speedstir

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    Re: FC rise or operator error?

    Yeah, that probably makes the 16.5 valid, I think.

    So, no operator error there, just a "low" spot in your circulation. I would use the forty minute blending time from here on out.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: FC rise or operator error?

    thanks, thats what i was thinking!
    IG Pebble sheen blue surf approx. 14k gallon, beach entry, 7' spa, 3.5 ton jumping rock/waterfall, Pentair 2hp whisper flo, booster pump, 520 cartridge filter, Stenner Econ T, 400k master temp heater, easy touch controls,TF-100 w/speedstir

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