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Thread: What's eating all the chlorine I put in?!

  1. Back To Top    #1

    Join Date
    Aug 2016
    Location
    Asheville, NC
    Posts
    13

    What's eating all the chlorine I put in?!

    I wrote last week about maintaining our pool myself with all your help, but hadn't received our test kit yet.

    I just received a missing component of the TFTestkit I ordered and promptly tested our pool.

    FC 0.5
    CC 1
    TA 150
    pH 7.8
    CYA 70
    Borate 0
    CH 300

    For the past week, I've been adding a gallon of chlorine/ day, but it's obviously not enough.

    The calculator says to add 38 oz of muriatic acid. The previous owners left some in our basement, which is now at least 4 years old. There's also some Baquacil (pH decreaser). Are these chemicals still good to use?

    Besides the muriatic acid, what else I should do?

    Thanks!
    27K gallons
    IG, Vinyl
    Sand filter-Haywood S200
    City water

  2. Back To Top    #2

    TFP Guide
    Mr Bruce's Avatar
    Join Date
    Mar 2014
    Location
    Greenville, SC
    Posts
    1,798

    Re: What's eating all the chlorine I put in?!

    SLAM TIME!!! Pool School - SLAM - Shock Level And Maintain

    e: The MA might still be good. Throw anything that says baquacil away!!

    Wait, was this formerly a baquacil pool?
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  3. Back To Top    #3

    Join Date
    Dec 2014
    Location
    Santa Ana, CA
    Posts
    523

    Re: What's eating all the chlorine I put in?!

    Quote Originally Posted by jaadkyki View Post
    I wrote last week about maintaining our pool myself with all your help, but hadn't received our test kit yet.

    I just received a missing component of the TFTestkit I ordered and promptly tested our pool.

    FC 0.5
    CC 1
    TA 150
    pH 7.8
    CYA 70
    Borate 0
    CH 300

    For the past week, I've been adding a gallon of chlorine/ day, but it's obviously not enough.

    The calculator says to add 38 oz of muriatic acid. The previous owners left some in our basement, which is now at least 4 years old. There's also some Baquacil (pH decreaser). Are these chemicals still good to use?

    Besides the muriatic acid, what else I should do?

    Thanks!
    Is 50% drain refill an option? This is to bring your CYA down to make your life easier later.

    If not- add MA to bring pH down to 7.2 and stock up on bleach to perform SLAM, at least 20 gallons at your current CYA level. Make sure your filter/pump in good working order.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

  4. Back To Top    #4

    Join Date
    Aug 2016
    Location
    Asheville, NC
    Posts
    13

    Re: What's eating all the chlorine I put in?!

    I don't think it was a Bacquil pool. The three containers are all old and dusty, even as of three years ago.

    - - - Updated - - -

    What I forgot to mention is that, despite the chemicals being off, the water is still gorgeous and there is no algae growth that I can see.

    Does this make a difference whether I SLAM or not?
    27K gallons
    IG, Vinyl
    Sand filter-Haywood S200
    City water

  5. Back To Top    #5

    Join Date
    Dec 2014
    Location
    Santa Ana, CA
    Posts
    523

    Re: What's eating all the chlorine I put in?!

    Quote Originally Posted by jaadkyki View Post
    I don't think it was a Bacquil pool. The three containers are all old and dusty, even as of three years ago.

    - - - Updated - - -

    What I forgot to mention is that, despite the chemicals being off, the water is still gorgeous and there is no algae growth that I can see.

    Does this make a difference whether I SLAM or not?
    Are you losing FC overnight or not? If you do you don't have choice and need to go through SLAM to stop that.

    In any event bring your FC to target 8 ppm by putting 2 jugs of bleach in, you're dangerously low on FC.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

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