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Thread: Accidentally mixed chemicals. Now what?

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    Accidentally mixed chemicals. Now what?

    We have a 27 ft. above ground pool. We took in a water sample to a pool store and they told us to add shock and stabilizer, wait four hours and add alkalinity. My husband didn't wait. He dumped all the chemicals in together. Now what? We have 3 kids begging us to swim but I am afraid to let them in the water. This is our second year to have the pool so we are newbies and could use any help. Thank you!

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    Join Date
    Nov 2009
    San Diego, CA

    Re: Accidentally mixed chemicals. Now what?

    Shock = chlorine
    Stabilizer = cyanuric acid and this dissolves slowly
    alkalinity up = baking soda (sodium bicarbonate)

    The first and foremost important answer is what is your chlorine level. That will be the single biggest indicator when it is safe to swim.

    The baking soda will have no immediate bearing and is safe, plus dissolves fast

    The cyanuric acid (stabilizer) dissolves slowly - how did your husband put it in the water. Usually it is put in an old sock and left to dissolve (some hang in the pool, others in the skimmer basket - which is what I do). If there is white stuff all over the bottom of the pool, it is the cyanuric acid. I wouldn't let the kids swim with it on the bottom. I've been in a pool with stabilizer undissolved and I got very itchy. What I would do if I had mistakenly done this? I would vacuum up the powder into the filter (watch the pressures), and let it dissolve in the filter. There is a liquid form of stabilizer (still is cyanuric acid) and if you used that, I think you can just poor it in and go, but I never used the liquid stabilzer, so someone else may want to chime in on that.

    Once the stabilizer is in a sock or in the filter dissolving slowly over a few days to a week, and you have your chlorine and pH at a safe level (you did read pool school?), your kids can go swimming.

    However, before you do that, post your numbers, including at a minimum pH, Total and Free chlorine, Total alkalinity to get the final ok
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    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Accidentally mixed chemicals. Now what?

    ^^nice post w/good info
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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