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Thread: CC Levels when testing

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    Join Date
    Jun 2011
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    Apple Valley, MN
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    CC Levels when testing

    We are using the TF-100 kit for all of our testing. Our pool is FULL of algae and who knows what else and we are currently in the process of shocking. When testing for CC we are only getting a result of .5, it only takes one drop to turn our test water clear. That doesn't seem right to us. We are new to this, we just got out kit on Saturday. Are we missing something?
    Thanks,
    Melissa
    25000, IG, Vinyl with Hayward S-240 series Sand Filter, Emerson 1081 Pool Motor, Hayward H250 Heater.

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    Richard320's Avatar
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    Re: CC Levels when testing

    If FC is zero, you won't form any CC.

    How much FC do you have?

    The way the test works is to mix the powder, measure the FC with R-871, then add the R-003 drops. If it turns pink again, you have CC. If so, you add more R-0871 until it turns clear again.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    duraleigh's Avatar
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    Re: CC Levels when testing

    Keep your posts in one thread....You'll get better advice because people can see your whole "story".
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: CC Levels when testing

    Thanks for the advice Dave, will keep all our future posts in one thread.

    We followed the instructions and have been keeping our FC levels above 12 for two days.

    Should we expect CC levels above .5?
    25000, IG, Vinyl with Hayward S-240 series Sand Filter, Emerson 1081 Pool Motor, Hayward H250 Heater.

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    Re: CC Levels when testing

    Quote Originally Posted by bluelakeside
    Should we expect CC levels above .5?
    Not necessarily. Though shocking algae with chlorine often produces CC, it does not have to. You can look at CC is just one of several reasons one might need to shock or to know when shocking already underway can be stopped. If you have an overnight chlorine loss >= 1 ppm or you have CC > 0.5 or you have visible algae or cloudiness, then you aren't done shocking.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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