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Thread: Results of the first 2 tests using the TF100

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    Join Date
    May 2014
    Location
    Milton, Florida
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    Results of the first 2 tests using the TF100

    I have been following this forum for a couple of months now, bought the tf100 test kit. Just switched the pool to salt.
    First test
    FC 5.5
    CC 0.5
    TC 6
    CH 350
    TA 130
    CYA 80 but I think I did this one a liitle wrong I could still make out the black dot a little
    Salt 3800
    PH 7.8

    I vacuumed the pool to waste and added water new test results are 5 hrs after the add
    FC 6.5
    CC 0
    TC 6.5
    CH 200
    TA 130
    SALT 4000
    CYA 60 this time I am pretty sure I did it right
    PH 8.2

    Entered this data into the pool calculator it says add 5.5lbs CYA and 2 qts Muriatic acid. By the way the pool is sparkling clearand 78 degrees.
    33000 gallon in ground vinyl pool
    Circupool SI 45+ SWG
    intelliflo variable speed pool pump
    Hayward sand filter
    home made 4 x 8 solar pool heater

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Results of the first 2 tests using the TF100

    I would hold on the CYA for another week or so and test again.....if it possibly was 80 (doubtful, I think you got it the second time @ 60) you certainly don't want to overshoot.

    Add the acid for sure. Get your pH out of the 8's and make sure it stays in the 7's all the time. It will tend to rise over time so checking pH frequently and keeping it in the seven's becomes almost as important as adequate chlorine (3-6 ppm)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Patrick_B's Avatar
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    Jun 2011
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    Re: Results of the first 2 tests using the TF100

    Welcome Oldgunner!

    First, I would concentrate on the FC and the high pH. That pH needs to come down.

    What target did you enter in the calculator to require 5.5 lbs of Cya? I would hold off on that just for now. Yes SWG Pool do usually need, more but lets wait on that for a bit ok?

    Make 7 your target for FC, stay as close as you can to it, and hammer on the pH. After the TA falls down some, the pH rise will lessen. You want the lower TA in a slat pool long term, but keeping on with lowering the pH will get you there.
    TFP Moderator
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    Join Date
    May 2014
    Location
    Milton, Florida
    Posts
    2

    Re: Results of the first 2 tests using the TF100

    What target did you enter in the calculator to require 5.5 lbs of Cya? 80
    Thanks for the advice I have the pool pump running 24 hrs at 1500 rpm and the salt generator at 15%
    33000 gallon in ground vinyl pool
    Circupool SI 45+ SWG
    intelliflo variable speed pool pump
    Hayward sand filter
    home made 4 x 8 solar pool heater

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