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Thread: Initial test results on our pool at new house

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    jrs_diesel's Avatar
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    Aug 2014
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    League City, TX
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    Initial test results on our pool at new house

    Good morning,

    I put my new TF-100 to use this morning and got the followi g readings:

    FC - 21
    CC - 0
    CYA - 140
    CH - 700
    TA - 90
    PH - 7.4

    Previous owners used a trichlor floater. With the high CYA it looks like I need to do a partial drain and fill. I am not seeing any calcium staining even with the high CH level, city water tested at 125 CH.

    I think my other numbers looked good. Am I on the right track with wanting to do a partial drain and fill?
    J.R.

    20K IG gunnite pool
    2HP Hayward single speed pump
    Cartridge filter

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    northrn's Avatar
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    May 2014
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    Cincinnati, OH
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    Re: Initial test results on our pool at new house

    Yup! Seems to me to be your first step! You can use pool math to figure out how much you need. Remember to leave about 12'' in the shallow end.

    And Welcome!
    27' AG 18K Gallons ~ Cartridge Filter ~ Pentair 1.5 HP Pump

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    jrs_diesel's Avatar
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    Aug 2014
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    League City, TX
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    Re: Initial test results on our pool at new house

    I imagine leaving the at least a foot in the pool will prevent it from "floating" out of the ground?

    If so, I don't plan on going more than halfway for draining. The pool gets a lot of sun, so I'm shooting for a CYA of 70.

    Thanks for the welcome!
    J.R.

    20K IG gunnite pool
    2HP Hayward single speed pump
    Cartridge filter

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    Join Date
    Oct 2013
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    Chapin, SC
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    Re: Initial test results on our pool at new house

    Unless you have a swg, 50 is as high as you want your cya. Your 21FC is a bit high unless you're trying to shock for some reason. If you are then, you're quite a bit low as your shock level for your cya is 55.
    Is your water table high?

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    jrs_diesel's Avatar
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    Aug 2014
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    League City, TX
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    Re: Initial test results on our pool at new house

    21 was what i got on the FC test. The OTO seems to agree, it turns to orange. There were about 5 or 6 trichlor tabs loaded into a floater before we closed on the house. No SWG at all here, I plan on using liquid chlorine.

    Not sure on the water table level for our area yet.
    J.R.

    20K IG gunnite pool
    2HP Hayward single speed pump
    Cartridge filter

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