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Thread: Too much bleach added

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    Angry Too much bleach added

    Just found out my husband has not been following my instructions about how much bleach to add, and I missed a few days of testing, so now my free chlorine is off the charts high (15). My CYA is 45, CC =1 pH is 7.8


    Do I just wait now, with no swimming until chlorine level comes down?

    Thank you,

    Renee

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    cowboycasey's Avatar
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    Re: Too much bleach added

    Renee, your FC is good, not of the charts of the charts would be 40 FC or so...

    For your CYA (50, there is no 45 CYA) SLAM FC level is 20 Pool School - Chlorine / CYA Chart

    You can swim in FC up to your SLAM level
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
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    Texas Splash's Avatar
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    Re: Too much bleach added

    With a CYA of 45 (rounded-up to 50) you can safely swim with an FC up to 20. So you're still good. The FC will drop soon on its own. But I would be concerned about that elevated CC of 1. Perhaps consider doing an overnight (OCLT) test to make sure you don't have an algae issue trying to start.
    Pool School - Perform the Overnight FC Loss Test (OCLT)
    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
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    VinDeeLoo's Avatar
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    Re: Too much bleach added

    You are okay to swim. Anything between minimum & slam is ok. Slam for your CYA of 50 is 20. (40 is 16). Your 15 is fine.


    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

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    Re: Too much bleach added

    I saw that my target FC is 6, so I panicked!!! Our friend's son also had a rash after swimming in our pool yesterday so I thought that it might be from too much chlorine in the pool (my kids did not get a rash or notice anything unusual) Should I still not add any more bleach until it comes down though?

    Thanks,

    Renee

    - - - Updated - - -

    And according to the calculator, I should add acid because my pH is too high? It's 7.8

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    VinDeeLoo's Avatar
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    Re: Too much bleach added

    Let it come back down. Your chlorine could have been too high yesterday (if you didn't test it). My pool is in full sun and have high heat indexes. My target is 4. I always try to put my chlorine up to 8 overnight so when the sun eats some up we don't drop too low.
    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

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    Texas Splash's Avatar
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    Re: Too much bleach added

    You can let it ride for today and just do an overnight test. With an FC of 15 now, it may fall to about 10 or so by this evening. Whatever you end-up with at bedtime, confirm it then test again in the morning before the sun hits the water and see what you get. Hopefully you don't lose anymore than 1 ppm of FC overnight. If you do, then you'll want to SLAM starting tomorrow until you pass the 3 SLAM criteria.

    A pH of 7.8 is the max you want to be. Yes, you can lower it a little to about 7.5 with muriatic acid. You can do that now if you like. Always remember in the future we never add bleach and muriatic acid at the same time.
    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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  8. Back To Top    #8
    VinDeeLoo's Avatar
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    Re: Too much bleach added

    What are your full readings?

    You should probably add your pool info in your signature.
    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

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    Re: Too much bleach added

    I'm not sure what is meant by full readings? I'll repeat the test numbers, and add as much info as I know to my signature line.

    FC 15
    CC 1
    TA 110
    pH 7.8
    CYA 50

    Renee

    33,000 Gal. Vinyl Inground Pool (will have to add pump info. later)

  10. Back To Top    #10

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    Re: Too much bleach added

    You're safe in the water as long as the FC is below SLAM level for your CYA. At 50, your SLAM FC would be 20. Give it some time, your FC will come down on its own. You need to drop your pH though to 7.4 - 7.6.
    16 x 32 IG plaster pool, 23k gallons, built 1992, DE filter, Pentair VS pump, IoThyngs controller, Taylor 2006 test kit, SoCal water restrictions
    Newbies with green pools, see SLAM and Recommended Test Kits. My company: IoThyngs

  11. Back To Top    #11
    VinDeeLoo's Avatar
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    Re: Too much bleach added

    Yes I would bring you pH down to 7.5.
    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

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    Re: Too much bleach added

    Thanks....is it dangerous to handle the acid? CAn I buy it at a hardware store or a Home Depot? I'm a little nervous about this step and I want to do it myself as I know my husband won't be careful doing it (sorry hubby but it's the truth)

    Thank you all so much for the support and advice

    Renee

    - - - Updated - - -
    33,000 GAL IG Vinyl Pool, Cartridge Filter,
    TF 100 Test Kit

  13. Back To Top    #13
    Texas Splash's Avatar
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    Re: Too much bleach added

    Here are a couple examples:
    Muriatic Acid (Home Depot):

    Muriatic Acid (Lowes):


    Pour slowly to avoid splashing. Watch the eyes and skin, and stay upwind. Don't breathe the fumes.
    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!

  14. Back To Top    #14
    VinDeeLoo's Avatar
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    Re: Too much bleach added

    You need to take precautions - don't breath in fumes, stay up wind, don't get in your eyes, etc. but it is not dangerous. Don't store it with chlorine - it is the one chemical we store in the garage away from other chemicals. Don't drip it on cement. We have a measuring cup that we only use for MA and we rinse it in the pool after we use it. You want to pour it SLOW.

    We get ours at our local hardware store. Many times it is with paints at places like Lowe's and such.
    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

  15. Back To Top    #15

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    Re: Too much bleach added

    Thank you for the pictures, and the cautions about how to use it. I'll take care of it today. I'm extremely grateful for your help,
    33,000 GAL IG Vinyl Pool, Cartridge Filter,
    TF 100 Test Kit

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