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Thread: Shockin question

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    Shockin question

    Hi:

    If I shock my pool, 15 - 19ppm, Can I still swim in the water? My CC is 0.5 and I want to shock the pool with bleach. How long do I have to wait after adding the bleach before I can swim? Is there a maximum number ,ppm, where it is not safe to swim?
    16000 gal Fiber Tech IG pool, Hayward C1100 Filter, Barracuda G3 Vacuum

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    JasonLion's Avatar
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    There is some disagreement on this. I feel that you are safe to swim as long as the FC is below shock level for your CYA level. Others propose higher and lower numbers. If you have any CYA in the pool, the active chlorine level is much lower, even at shock level, than many public indoor pools.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
    Thank you.

    Right now my FC is 8.5, CYA 50 and CC 0.5. I want to reduce the CC. Using one of the calculators, it is advised to raise the FC to 19. When I do this(with bleach) I wanted to know if this was safe to swim in.
    16000 gal Fiber Tech IG pool, Hayward C1100 Filter, Barracuda G3 Vacuum

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    JasonLion's Avatar
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    With CYA at 50, I recommend swimming when the FC level is between 4 and 15 (except a little lower with a SWG). Others might give higher or lower numbers, there isn't one "correct" answer.

    There isn't any need to worry about a CC reading of 0.5. You only need to lower CC when it takes two or more drops to clear the water when doing the CC test.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    frustratedpoolmom's Avatar
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    I was going to second Jason, a .5 cc isn't really worth shocking.... just go swim!
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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