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Thread: o.k. to swim? Just shocked.

  1. Back To Top    #1

    Join Date
    Jun 2012
    Location
    Louisville, KY
    Posts
    50

    o.k. to swim? Just shocked.

    Hi all,

    I ran a search on this topic to see how soon after shocking you can return to swimming. Based on what I've read, it looks like it's safe to return to swimming once your FC is below shock level. Here's where it gets foggy for me:

    Based on this chart I was referred to for shocking:

    pool-school/chlorine_cya_chart_shock

    ...it states my shock FC level for a CYA of 65 should would be somewhere between 24 and 28. My current FC reads 23, so I would assume I'd be good.

    But then I just noticed pool calculator says that my shock FC level is only 19, which would mean a FC of 23 is not swimmable.

    Which should I follow? Is my FC of 23 safe to swim? I have a family get together at my house today, and there will be about 10 heart-broken kids if they have to stare at a swimming pool they can't swim in all day.

    If it's not safe to swim, is there anything I can do to get the FC down a few PPM relatively quickly?

    Thanks
    38,000 gallon IG pool Plaster bottom & fiberglass walls
    Jandy FloPro 1.5hp, 2-speed pump
    Hayward S310T2 sand filter
    CompuPool CPSC36 SWG

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
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    30,084

    Re: o.k. to swim? Just shocked.

    Swim away. The shock values developed here are guidelines and there is some leeway. If you want to swim, it's fine.

    1. Is your pool clear? Did you pass the OCLT which indicates the shock process is complete?

    2. It would have been better if you had kept this under your other thread already started so everyone could easily see your whole "story". Start as few new threads as possible to get the best advice.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
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    Jun 2009
    Location
    SouthWest Alabama
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    22,347

    Re: o.k. to swim? Just shocked.

    If you use the numbers in the chlorine/cya chart, your shock level is 26 so you'd be fine to swim as long as the water is clear and the CC's are less than 1. There's a little bit of difference between the chart and the calc.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  4. Back To Top    #4

    Join Date
    Jun 2012
    Location
    Louisville, KY
    Posts
    50

    Re: o.k. to swim? Just shocked.

    Thanks, guys. Yes, I passed the OCLT test from Thursday night to Friday morning. FC was at 36 about 10pm on Thursday night and still 36 at about 8am Friday morning. FC as of this morning was 23, so I'm guessing that's due to the bright, sunny, 95 degree day we had here yesterday.

    CC has consistently been 0 since Wednesday evening.

    Pool is clear, but I've got some white stuff on the floor now that clouds up if I brush. I'm guessing that's dead algae I need to vacuum away.

    I'm guessing once I get about 10 kids in there, the pee is going to bring my FC way down way quick. LOL
    38,000 gallon IG pool Plaster bottom & fiberglass walls
    Jandy FloPro 1.5hp, 2-speed pump
    Hayward S310T2 sand filter
    CompuPool CPSC36 SWG

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