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Thread: Low Chlorine and High PH

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    Cool Low Chlorine and High PH

    I have a 9500 gallon above ground pool that's 18X48. I had a huge problem with having a green Ninja Turtle pool for the past month, could get it to cloudy but never clear and swim quality, so I drained the pool, scrubbed and cleaned, and started over. Everything is new and clean and my pool is refilled now. Pump has been running for 3 days and water still looks beautiful, and I want it to stay that way. Tested the water today with my at home test kit. Test is showing that my PH is above 8.2 and my chlorine is at 0. Been researching all day and I think I need to shock the pool and add Muriatic Acid. Thoughts Please! Thanks!

    Brandi
    Burleson, Tx

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    Mod Squad jblizzle's Avatar
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    Re: Low Chlorine and High PH

    What test kit are you using?

    You need to lower the pH.
    Increase the FC and get some stabilizer (CYA) in the water to protect the chlorine from the sun.

    BTW, you should never wait 3 days between tests and chlorine addition. FC must be added daily.

    Have you discovered Pool School yet? Start with these:
    ABCs of Water Chemistry
    Recommended Pool Chemicals
    How to Chlorinate Your Pool
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    Re: Low Chlorine and High PH

    I am using an HTH test kit. I am new at all this, so forgive me if I seem ignorant to any and all this pool stuff. So I should add liquid chlorine every day? I know I need to lower the PH that's why I asked if I should use Muriatic Acid to lower the PH and shock to raise the FC. I waited 3 days because I just refilled the pool and that's what the instruction's said to do that I got with my (cartridge) pump.

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    Mod Squad jblizzle's Avatar
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    Re: Low Chlorine and High PH

    What HTH test kit? Hopefully not strips.

    Yes, add muriatic acid to lower the pH.
    Yes, add chlorine, usually we use bleach. What is this "shock" you are referring to?
    And you need to get stabilizer in the water.

    Make sure you read the links I provided.
    Jason, TFP Moderator
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    Re: Low Chlorine and High PH

    No I'm not using the test strips, I'm using the test kit with the drops. The shock I am referring to is

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    Mod Squad jblizzle's Avatar
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    Re: Low Chlorine and High PH

    What do the ingredients say?
    Generally we do not like and #-in-1 products as often some of the extras are not desirable ... like copper.
    Jason, TFP Moderator
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    Re: Low Chlorine and High PH

    Awesome! Good to know!! I have been told to use bleach instead of Liquid Chlorine as well by many different pool owners.

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    Mod Squad jblizzle's Avatar
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    Re: Low Chlorine and High PH

    bleach and liquid chlorine are the same ... just different strengths. Use whichever is the best deal.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Low Chlorine and High PH

    Also, what would you recommend as a stabilizer

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    Mod Squad jblizzle's Avatar
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    Re: Low Chlorine and High PH

    All stabilizer is cyanuric acid ... find the ~100% stuff (Walmart, etc) ... covered in one of the links I gave you
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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