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Thread: New pool owner: High pH and high Chlorine

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    kathleflan's Avatar
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    Cool New pool owner: High pH and high Chlorine

    For starters, I am a new pool owner and the last owner left no instruction manual on the pool. I measured the pool and it's about 30ft long, 16 ft wide and 5.5 ft deep at its deepest.

    We acid washed our pool so the water is new, about 3 weeks ago. However, we have been having trouble keeping the chemistry where it should be.
    I had my water test done (a second time) with these results:
    FAC: 0
    CYA: 0
    TA: 100
    pH: 8
    Pho: 400

    This was my pool's chemistry AFTER I had shocked it (causing the previous CYA 0 to jump to a 'high' reading of about 1) and put acid in it, a week ago.

    Per pool store instructions, I just finished putting 35 ounces (16oz, wait 4 hours, etc...) then I shocked the pool and put conditioner in it and accidentally put phosphates in it a few hours after the conditioner (the verbal instructions just said to wait a little bit but when I read them (unfortunately after putting in phosphates) it said to wait 72 hours.

    Anyway....now my FAC is on the high end of the reading (as to be expected) but the pH which was 7.5 four hours ago is back up to 8.0....what is going on with my pool...why is the pH rising so quickly?

    Oh and I am located in Las Vegas, NV....right now the days are getting up to mid 80s but the nights cool down. Not sure if that makes a difference!
    I think the water is pretty hard.

    Any advise would be extremely appreciated!

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    Richard320's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Welcome!

    Advice, you say? Read. Start with Pool School. Specifically, the ABCs, so we're all speaking the same language. Then, What is TFPC? Hint: it's doing your own testing and only adding what your pool needs.
    Then, Recommended Pool Chemicals, How to use Poolmath, and Test Kits Compared. You could just skip the last one and jump right to TF100 but the article explains why it is a better deal. No, I don't get a commission, but I do recommend the XL option now as well as the speedstir. You will burn through a lot of reagents early on, so it's helpful to have the nearly-impossible-to-find-locally FAS-DPD powder refill now. Nobody who has purchased a speedstir regrets it.

    The single most important thing to do is to test the water yourself. There's a rather steep learning curve when you get your kit and are trying to balance the chemistry. Two weeks to a month, typically. But after that, it's about as routine and difficult as brushing your teeth every night. And your water will be sparkling clear, clear enough to toss a quarter in the water and see whether it landed heads or tails in the deep end. I kid you not. The alternative is to climb on the pool store merry go round and get bled every week.

    Some examples of being "poolstored":
    http://www.troublefreepool.com/threa...-to-see-bottom
    http://www.troublefreepool.com/threa...rgs-plus-Green
    http://www.troublefreepool.com/threads/75164-PB-didn-t-listen-Phos-Free-will-it-cause-damage
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Smykowski's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Welcome to the forum! Richard just gave the best answer a new poster could possibly get.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    kathleflan's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Thank you! I have been reading but it's like learning a new language!
    One thing I have read a few times is if the Free Chlorine is very high it can alter the PH test? Is that true? I am only asking because this morning at 6AM our PH reading was 7.6 then we added in chlorine and conditioner (again pool store instructions b/c their test showed a CYA of 0 and FC of 0).
    When I tested the water at 10AM the chlorine was really high and the PH was 8.2. A really short time for the PH to jump. I had added the muriatic acid last night to bring the high PH down.

    In short, could my PH reading be wrong due to the high FC reading?


    Thanks for the links and recommendations!

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    Richard320's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Quote Originally Posted by kathleflan View Post
    Thank you! I have been reading but it's like learning a new language!
    One thing I have read a few times is if the Free Chlorine is very high it can alter the PH test? Is that true? I am only asking because this morning at 6AM our PH reading was 7.6 then we added in chlorine and conditioner (again pool store instructions b/c their test showed a CYA of 0 and FC of 0).
    When I tested the water at 10AM the chlorine was really high and the PH was 8.2. A really short time for the PH to jump. I had added the muriatic acid last night to bring the high PH down.

    In short, could my PH reading be wrong due to the high FC reading?


    Thanks for the links and recommendations!
    Yes. If FC is above 10, your pH will read falsely high. Post 3 has photos that prove it. http://www.troublefreepool.com/threa...els-with-R-007
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad kimkats's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Yeah everything that Richard has said! He is doing a wonderful job, as always, showing you the way to a Trouble Free Pool.

    TFP will help you keep a clear, clean, cheaper pool than any pool store.

    Is a water test really "free" if you have to buy something every time you are in there?

    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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    Patrick_B's Avatar
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    Re: New pool owner: High pH and high Chlorine

    Welcome to TFP Kath,

    It only seems like a lot at first, but what it will boil down too, is proper FC for your Cya level, good pH control as the core of what you need to learn first. Don't be overwhelmed, just take a bite at a time. We'll be here when you have questions.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Divin Dave's Avatar
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    Re: New pool owner: High pH and high Chlorine

    HI Kathleflan,
    to emphasize one point which Richard noted. You REALLY, need a good test kit.
    Pool Store testing is notoriously wrong and itsnt to be trusted (much like the advice they give).
    The TF100 is da bomb! It will be the best investment in your pool that you can make. www.tftestkits.net

    Oh, and if you would fill out your signature with some pool details, then we wont have to scroll back to post 1 to find out.
    It really helps us to provide recommendations if we know those specifics.

    http://www.troublefreepool.com/conte...efore-you-post
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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