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Thread: concentrated chlorine... Help!

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    concentrated chlorine... Help!

    The only chlorine available a walmart tonight is 33% more concentrated. 121 oz = 182 oz.
    How do I calculate???

    FC = 0
    ph = 7.5

    Shock goal is 15.

    Where do i start???
    20ft round; sand; AG; vinyl

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    Vette's Avatar
    Join Date
    Jul 2012

    Re: concentrated chlorine... Help!

    The concentrated (121=182) Clorox is simply an 8.25% concentration instead of 6%. So you type 8.25% into the calculator.
    11,700 gallon 21' round 54" deep all-resin AGP - June 2012
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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: concentrated chlorine... Help!

    simply adjust the percentage in the box of the poolcalculator from 6% to 8.25%
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Join Date
    Jul 2007
    Chicago, IL

    Re: concentrated chlorine... Help!

    The easiest thing to do is to go to

    Enter the size of your pool in gallons, your current FC level (0), your target FC level (15) and the percentage strength of your bleach (sounds like 8.25). The website will show the amount of bleach you need to add.
    28K, 20' x 40' IG - Vinyl Liner, Hayward DE Filter, 1.5HP Pump, 250K Hayward BTU Heater, Aquabot Breeze 4WD robotic cleaner

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    Re: concentrated chlorine... Help!

    Thanks!! I have used the calculator since the beginning but just didn't know for % of the chlorine. Now I see the 8.25% on the jug. thanks again!!
    20ft round; sand; AG; vinyl

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    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: concentrated chlorine... Help!

    Quote Originally Posted by phyllis
    Where do i start??? In the yellow-banded FC section at the top of the page, input 8.25 in the box where it says "Add of % bleach. It's between the "of" and "%". It will tell you how much of the 8.25% bleach to add to reach your target FC. Also, be sure to enter the size of your pool in gallons, your current FC level, and your target FC level
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