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Thread: What is the proper order of water tests to do on a a/g vinyl

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    What is the proper order of water tests to do on a a/g vinyl

    Hi Everyone,

    What is the proper sequence of water tests to do to get the best results?

    My tests for today are as follows:

    Chl 0
    ph 7.4
    alk 70
    calc 90
    cya 0

    I had a huge amount of leaves in the bottom from the cover coming loose during a huge storm and dropped in the pool last winter. The leaves and debris are 95% out. The water is very slightly hazy. It has gotten much better from the shocking I did in the past 4 days.

    Thanks
    19500gals 28' x 54" AGR vinyl
    3/4 hp Hayward Pro Series High Rate Sand Filter S210T
    3yrs old June 2008

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    Mod Squad Bama Rambler's Avatar
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    Re: What is the proper order of water tests to do on a a/g vinyl

    It really doesn't matter which sequence you perform the tests in. You should do the FC and pH tests every day and the other tests about once a week or longer. Unless your shocking, then you should test and adjust pH first then test FC every few hours to begin with and cc once a day. At least that's what I recommend.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: What is the proper order of water tests to do on a a/g vinyl

    Thanks,

    Maybe I should have asked:

    What is the order of bringing test results in line with the recommended levels?

    Such as should I have my TA in line before I get the PH in line or some other sequence.

    Being my Cl is 0, I am thinking I should get that up to shock level tonight.
    19500gals 28' x 54" AGR vinyl
    3/4 hp Hayward Pro Series High Rate Sand Filter S210T
    3yrs old June 2008

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    Mod Squad Bama Rambler's Avatar
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    Re: What is the proper order of water tests to do on a a/g vinyl

    The normal sequence of adjustment is;
    1. pH
    2. CYA
    3. FC
    4. Then the rest in no particular order unless you need to drain to lower CH or CYA then you do that that first.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Richard320's Avatar
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    Re: What is the proper order of water tests to do on a a/g vinyl

    If you're dumping in lots of Chlorine, test that first, because high FC will affect the colors in the other tests rendering them useless.

    I usually hit pH first, because the more you agitate, the more you aerate, and it could affect the reading. But probably I'm just being obsessive. Then FC, then TA. CYA isn't going to change much, if any, week to week. It can wait its turn. And I know my CH is gonna be high no matter what. It can wait too.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: What is the proper order of water tests to do on a a/g vinyl

    Thanks very much. I will be on that this morning with my p/w tests.
    19500gals 28' x 54" AGR vinyl
    3/4 hp Hayward Pro Series High Rate Sand Filter S210T
    3yrs old June 2008

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