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Thread: Where is my Cl going?

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    Join Date
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    Where is my Cl going?

    Hi all, I am at the point in a start up from getting new plaster (Primera from wet edge) where I am trying to get Cl up. I'm still having to add some acid to keep pH down but that seems to behaving predictably. My TA is good and CYA is pretty low maybe too low. I used up all my reagent so I can't test right now. But I can't get Cl levels to come up. (currently have 0 cl both FC and CC) I have put in multiple gallons over the last 2 days.

    Is it just not any CYA? I am very hesitant to bring up CYA since I am in CA and if I over shoot it there is nothing I can do to bring it down.

    What am I missing?
    Aprox. 15000 gal in-ground plaster pool. 4 speed pump with a cartridge filter.
    Spa and gas heater attached.
    Ca resident = water restrictions

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    Texas Splash's Avatar
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    Re: Where is my Cl going?

    No CYA and you will lose almost all of your free chlorine in no time at all. You really need to get some reagents and test that CYA. If you think you are at zero, and you probably are with new water if the plaster people didn't add any, then at least consider a target of 30 ppm. But hey, what about your plaster folks? Didn't they help with your start-up? You don't' want to mess their process and void your warranty.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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  3. Back To Top    #3

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    Re: Where is my Cl going?

    The plaster folks did tell me that I had some CYA and that I shouldn't need any. However when I tested it myself I could see the black dot when the tube was full. But that was the last of my reagent and I was slightly shy of the right amount needed for the test.

    I think I will email the plaster guys and run to the pool store tomorrow to get some reagent, more Cl and stabilizer.
    Aprox. 15000 gal in-ground plaster pool. 4 speed pump with a cartridge filter.
    Spa and gas heater attached.
    Ca resident = water restrictions

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    Texas Splash's Avatar
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    Re: Where is my Cl going?

    If you can't find the R-0013 CYA reagent locally, TFTestkits can expedite some to you. I never like the PB response of "there is some in there". I remember how they added it to my pool .... just poured it in with no measuring. I can certainly understand your concern to not exceed your intended goal, and for them to say "some" leaves a lot for room for guessing.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  5. Back To Top    #5

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    Re: Where is my Cl going?

    I added some stabilizer (might have to add more) but still no chlorine retention. I've added over 10 gallons at this point. Is that normal for a new pool?
    Aprox. 15000 gal in-ground plaster pool. 4 speed pump with a cartridge filter.
    Spa and gas heater attached.
    Ca resident = water restrictions

  6. Back To Top    #6

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    Re: Where is my Cl going?

    Depends. How much chlorine have you added since you added CYA? Without CYA, FC will disappear pretty quickly in the sun.

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    Mod Squad kimkats's Avatar
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    Re: Where is my Cl going?

    Quote Originally Posted by emperkin View Post
    I added some stabilizer (might have to add more) but still no chlorine retention. I've added over 10 gallons at this point. Is that normal for a new pool?
    10 gals of ???? chlorine or CYA?

    When did you add the stabilizer? What it the powder or liquid? Have you tested for it yet?

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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