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Thread: Tf100 test very different from pool store

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    Tf100 test very different from pool store

    I have cloudy water been working on it for about a week and yes it was a swamp. I can see bottom now but water is cloudy. took some water to pool store and they had FC at 6 but with test kit i get 10.5?

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    Mod Squad jblizzle's Avatar
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    Re: Tf100 test very different from pool store

    Welcome to TFP!

    Their test likely maxes out at 5ppm ... your test kit is better than what they use ... Trust it!
    Jason, TFP Moderator
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    JasonLion's Avatar
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    Re: Tf100 test very different from pool store

    Trust you own results, and ignore what the pool store tells you. Even a complete novice with a TF100 is more reliable than the average pool store.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Butterfly's Avatar
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    Re: Tf100 test very different from pool store

    Always trust your own testing over the pool store!

    As Jason said, they usually can only test up to 5, but YOU can test up to 50 with your FAS/DPD test!
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    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.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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    Re: Tf100 test very different from pool store

    There test does go up higher than 5 they have tested the water up to 16 for me before when shocking and before i got my kit. I will do the overnite test tonight since it is still cloudy to see if i need to shock more or maybe need to put some DE in filter.

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    Re: Tf100 test very different from pool store

    Pointless to do the OCLT when your pool is cloudy. The OCLT is used when your pool is crystal clear and you CC test result is .5 ppm or less.

    Regardless of what Pool store reports or how high they can test, you must trust your own testing if you are to manage your own pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Tf100 test very different from pool store

    I read on one of the threads to do the OCLT test if you thought all algea was killed but water was not clearing? IF the FC level does not drop overnight would that not mean that you just have dead algea and debris floating in the water? and might need to clean out filt or put some DE in it to help filter out the smaller particles?

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    Re: Tf100 test very different from pool store

    and might need to clean out filt or put some DE in it to help filter out the smaller particles?
    You certainly need to keep your filter clean. Adding DE has it's place for very, very fine filtration but I would not use it to clear a pool that was obviously cloudy.

    Far too often, we see newbs anxious to do the OCLT (often incorrectly) and when they "pass" they immediately let the FC go down and their problems continue.

    You are welcome to do the OCLT at any point in the process but it should not be considered as an endpoint when you still have a cloudy pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Tf100 test very different from pool store

    So do I need to still be shocking the pool?
    Fc 10.5
    cc .5
    cya 40
    ph 7.2
    according to my testing anyway.
    That FC level is that high 2 days after putting in shock Sat night and tested yesterday.

    I had cut the pump off one day last week to sihon off some water to get cya down some. Water cleared a good but with lots of debris on the bottom but when turn pump back on been cloudy every since?

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    Re: Tf100 test very different from pool store

    You have finished the Shock Process when....

    1. Your pool water is sparkling
    2. Your CC's are .5ppm or less
    3. You can hold your FC overnight without losing more than 1ppm.

    If your pool is cloudy, you haven't finished. Get your FC back up to 16 or so and keep it there until your water is clear. This part takes patience and persistence. Brush often....brush up whatever you can as much as you can.....it may make the pool a bit cloudier at first but it's temporary. vacuum often and backwash/clean your filters as necessary.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Tf100 test very different from pool store

    Alrighty thanks will do!

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