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Thread: Test Results in - Is FC what I should focus on?

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    Test Results in - Is FC what I should focus on?

    My TF-100 came in today and I've tested my water. Here are the results:

    FC 1.0
    CC 3.0
    TA 180
    CH 300
    CYA 80
    PH 7.8

    I've already started the shocking process, aiming for a shock FC of 30, since my CYA is 80. Am I on the right track? Should I be concerned with any other levels at this point, or wait until the green swampy is gone?

    Also we are filtering 24/7, brushing walls, using leaf rake.

    I'm off work the next two days. If I test more frequently (every two hours perhaps) and replenish the FC to 30 more frequently during the day, will I get results faster?

    Thanks for the advice!
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    Mod Squad jblizzle's Avatar
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    Re: Test Results in - Is FC what I should focus on?

    if you are going to accept that high CYA, then you are right, keep the FC up and follow the shock process.

    I would consider replacing 25-40% of the water to let the CYA to a little more manageable level, but not totally a necessity at this point.

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    Re: Test Results in - Is FC what I should focus on?

    Quote Originally Posted by jblizzle
    ...I would consider replacing 25-40% of the water to let the CYA to a little more manageable level, but not totally a necessity at this point...
    Agreed.

    Much easier to run the shocking process with a lower CYA.

  4. Back To Top    #4

    Re: Test Results in - Is FC what I should focus on?

    Quote Originally Posted by jtammy
    My TF-100 came in today and I've tested my water. Here are the results:

    FC 1.0
    CC 3.0
    TA 180
    CH 300
    CYA 80
    PH 7.8

    I've already started the shocking process, aiming for a shock FC of 30, since my CYA is 80. Am I on the right track? Should I be concerned with any other levels at this point, or wait until the green swampy is gone?

    Also we are filtering 24/7, brushing walls, using leaf rake.

    I'm off work the next two days. If I test more frequently (every two hours perhaps) and replenish the FC to 30 more frequently during the day, will I get results faster?

    Thanks for the advice!

    FC of 30 is correct @CYA 80
    With a SWG, 80 CYA is at the top end of the chart.

    http://www.troublefreepool.com/pool-school/chlorine_cya_chart_shock
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    Re: Test Results in - Is FC what I should focus on?

    If I test more frequently (every two hours perhaps) and replenish the FC to 30 more frequently during the day, will I get results faster?
    Yes. You will experience less and less FC loss as the process continues so you won't need to do it that often more than a day.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Test Results in - Is FC what I should focus on?

    You should lower the pH to about 7.2 before you start the shock process.
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    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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