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Thread: Got my TF-100 kit....now what?

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    Got my TF-100 kit....now what?

    I received my kit yesterday and tested the pool this morning. My numbers are whacky! We have had a recurring issue of mustard algae. We have been pouring 1 gallon of bleach in per day until we got our test kit. That has been for the last 5 days. I hope that is why our FC levels are so high. From what I have read, we are at shock level.

    FC 34.5
    CC.5
    TC 35
    pH 7.6 (at least that's ok )
    TA 120
    CH 560
    CYA 100

    So what's next? I'm new to this. Our pool company built a beautiful pool but the follow through and empty promises have been a nightmare to deal with. Any suggestions would be greatly appreciated.

    We live just south of houston. Average temps right now are 95-100F
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
    Built July 2012

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    Re: Got my TF-100 kit....now what?

    First thing is your CYA test reading. How did you get 100? Anything at or even OVER 100 will read as 100.

    If your CYA level is 90 or higher, repeat the test adjusting the procedure as follows:

    Fill the mixing bottle to the lower mark with pool water.
    Continue filling the mixing bottle to the upper mark with tap water.
    Shake briefly to mix.
    Pour off half of the contents of the mixing bottle, so it is again filled to the lower mark.
    Continue the test normally from step 3, but multiply the final result by two.
    12500 gallons, 24 foot round above ground
    Hayward Sand filter, Pentair OptiFlo 1HP 2-Speed pump

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    Re: Got my TF-100 kit....now what?

    The water line was sitting at 100
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
    Built July 2012

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    Re: Got my TF-100 kit....now what?

    Also if it is true mustard algae, your actual SLAM target is more like 54, if your CYA is 100 and not higher. FIRST, lets get a true read on your CYA reading,then someone will suggest you drain and refill some water to bring your CYA down. After that, can get started on treatment.

    I don't have the TF-100 for the CYA test so I can't be sure. If it was at 100, I think it would be appropriate to do the test with the instructions above. Going off the extended test instructions which were written for the Taylor and TF-100, they say anything over 90 should be done with the above directions.

    Also feel free to wait for someone else to chime in with their thoughts.

    This is where that comes from if you haven't seen this page yet.
    http://www.troublefreepool.com/exten...ns-t25081.html
    12500 gallons, 24 foot round above ground
    Hayward Sand filter, Pentair OptiFlo 1HP 2-Speed pump

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    Re: Got my TF-100 kit....now what?

    ^^yep, what Scott said. You do need to use the dilution method to test the CYA. And, yes, you do need to do the drain/refill dance and get the CYA to something reasonable, closer to 50.

    What is the CH of your fill water?

    The pH will read a false high when FC is above 10. Next time FC is below 10, retest pH and adjust if necessary.
    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.

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    Re: Got my TF-100 kit....now what?

    Quote Originally Posted by scott.MI
    First thing is your CYA test reading. How did you get 100? Anything at or even OVER 100 will read as 100.

    If your CYA level is 90 or higher, repeat the test adjusting the procedure as follows:

    Fill the mixing bottle to the lower mark with pool water.
    Continue filling the mixing bottle to the upper mark with tap water.
    Shake briefly to mix.
    Pour off half of the contents of the mixing bottle, so it is again filled to the lower mark.
    Continue the test normally from step 3, but multiply the final result by two.

    When I did this test, the CYA is 60
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
    Built July 2012

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    Re: Got my TF-100 kit....now what?

    Quote Originally Posted by Butterfly
    ^^yep, what Scott said. You do need to use the dilution method to test the CYA. And, yes, you do need to do the drain/refill dance and get the CYA to something reasonable, closer to 50.

    What is the CH of your fill water?

    The pH will read a false high when FC is above 10. Next time FC is below 10, retest pH and adjust if necessary.

    My CH of fill water is 120
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
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    Mod Squad jblizzle's Avatar
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    Re: Got my TF-100 kit....now what?

    So doubling the reading of 60ppm for CYA would put your CYA around 120ppm. So you should replace about 60-70% of your water to get the CYA back in range.

    This will also help lower the CH.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Got my TF-100 kit....now what?

    Will the direct sunlight damage our pebble sheen? Our pool builder said it would but have learned he is full of poopie.
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
    Built July 2012

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    Mod Squad jblizzle's Avatar
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    Re: Got my TF-100 kit....now what?

    It could. Try to drain and fill at night? Or keep the surface sprayed down?

    Actually would not hurt to contact Pebbletec directly and ask what they think.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Got my TF-100 kit....now what?

    Drained the pool, now filling it. It should be full by tomorrow afternoon. What's the 1st step? Test the water and go from there ?
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
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    Re: Got my TF-100 kit....now what?

    Yes, test the water.

    Then, Read "The ABC's of Pool Water Chemistry" up in Pool School. That'll give you the suggested ranges for the parameters you have just tested and help you understand more about why you are moving them (if at all).

    Next, move your parameters into those ranges in this order...

    pH
    FC
    CYA
    CH
    TA
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Got my TF-100 kit....now what?

    pH is 7.5
    FC is 8.0
    CYA 60
    CH 270
    TA 100

    Did the trick! Thanks guys. We are going to use the BBB method from now on. FC is still high but I will monitor it.
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
    Built July 2012

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    Mod Squad jblizzle's Avatar
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    Re: Got my TF-100 kit....now what?

    Looks pretty good. The FC is really not too high according to the FC/CYA Chart with a CYA of 60ppm, the minimum FC level is 5ppm ... which likely means you should be dosing to around 7-8ppm each day to be sure it does not drop below 5ppm.

    Remind me was there any sign of algae in the water? cloudy/green/etc that would suggest you should SLAM the pool now that the CYA is reasonable?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Got my TF-100 kit....now what?

    It does look a lil green. That was my next question. The pool calculator is not cooperating.....
    18K / in ground / PebbleSheen /Hayward pump / DE filter /spa / Polaris cleaner
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    Mod Squad jblizzle's Avatar
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    Re: Got my TF-100 kit....now what?

    Well, if it is green then you need to go through the SLAM Process until you pass the 3 criteria allowing you to stop.

    What is the issue with the calculator? Explain what you are trying to do and we can verify.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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