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Thread: HOw to read CYA with TF-100

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    HOw to read CYA with TF-100

    I just received the TF 100 and I am trying to get my initial readings. I have everything but the CYA. Do I need the black dot to disappear completely? And holding it waste high correct? I did it twice but not sure the black dot ever fully disappears before getting it full. Thanks for the help.

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    Mod Squad jblizzle's Avatar
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    Re: HOw to read CYA with TF-100

    If the dot never fully disappeared, then your CYA is < 20ppm
    Jason, TFP Moderator
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    Re: HOw to read CYA with TF-100

    ok, then here are my initial readings. I am battling cloudy water.

    FC=3
    cc=1.5
    TC= 4.5
    CH=400
    TA=100
    pH=7.5
    CYA < 20

    Next steps?

    I have about a 15K gallon pool, plaster walls, sand filter.

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    Mod Squad jblizzle's Avatar
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    Re: HOw to read CYA with TF-100

    Add stabilizer to target 30-40ppm (maybe add 20ppm) in a sock in the skimmer.
    Then start to follow the ShockLevelAndMAINTAIN Process, assuming your CYA is 30ppm or so.
    Verify the CYA level in a week.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    ComputerGuyInNOLA's Avatar
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    Re: HOw to read CYA with TF-100

    When you do this test you also want to make sure you are outside with the sun to your back. I never do this test inside, or outside if it is overcast. You can also purchase a CYA standards solution so you will know what to look for. This is a great thread on the subject;

    http://www.troublefreepool.com/threa...andard-results
    Gunite/Plaster pool at 13k gallons. All Jandy with CL340 series cartridge filter, 1.5 HP Jandy Stealth pump. Jandy 1400 SWCG and PDA4 controller. Dual waterfalls. Polaris 280. Pool installed August 2012. Southern Louisiana. And lets not forget my trusty TF100 test kit!

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    Re: HOw to read CYA with TF-100

    I borrowed this link from a thread here:

    http://www.taylortechnologies.com/Ch...P?ContentID=44
    25K IG gunite pool / PebbleTec plaster / 2HP Hayward 2 speed pump / Hayward 525 SQ/FT SwimClear Cartridge filter / Tiger Shark QC robot / TF-100 test kit / Stenner pump X 2 - Chlorine and Acid

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