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Thread: Is adding around 100 ounces of bleach per day

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    Is adding around 100 ounces of bleach per day

    Seem about right? Cya is 40. 15,000 gallon pool. Just seems like a lot to me. It is usually around 90 degrees outside and the pool gets full sun all day. It is used a lot also. Thx
    16 x 32 Sport Pool; Hayward Series Sand Filter S244T
    15,000 Gallons, In Ground with New Vinyl Liner
    Pool approx. Five Years Old. Live in KY

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    Scuba_Steve's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    I am a SWG user, so no real help on amounts.

    I do know that if you are questioning your chlorine use, the only real answer is by doing an OCLT.

    OCLT Directions
    6425g Intex Ultraframe 18'x48" AG
    Stock 1500gph cartridge filter / Intex SWG CG-28669 with E.C.O.
    Install date: 5/26/2015
    TF-100
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    Texas Splash's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    If I did my Poolmath calculator correctly based on your pool size and CYA, that would appear to be 4.5 ppm each day which does seem a bit high. Somewhat explainable perhaps based on total exposure to sun, swimming load, CYA of 40, etc. You could always sneak that CYA up to 50 to try and save some FC per day. You could also post a full set of test results and/or do an OCLT just to be safe. Hope this helps.
    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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    Mod Squad pooldv's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    100oz of fresh 8.25% into 15k gallons is 4.4ppm. That is slightly on the high side of "normal" but not way out of line. Especially with a lot of use. Raising CYA a little more might help a bit but, not a lot.
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    Texas Splash's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    Based my estimate on using 8.25% bleach.
    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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    Richard320's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    Quote Originally Posted by Darren35 View Post
    Seem about right? Cya is 40. 15,000 gallon pool. Just seems like a lot to me. It is usually around 90 degrees outside and the pool gets full sun all day. It is used a lot also. Thx
    In Effects of Adding Chemicals at the bottom of poolmath, it says 100 oz of 8.25% bleach in 15,000 gallons raises FC by 4.4

    In full sun with only 40 CYA and a lot of use, not unreasonable.

    The way to know for sure is to run an overnight loss test. If nothing's growing in the pool, you won't lose hardly any.

    If you don't have anything eating it up overnight, try raising CYA to 50. If you do - meaning you failed the OCLT - then you need to Pool School - SLAM - Shock Level And Maintain
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Re: Is adding around 100 ounces of bleach per day

    Thanks everyone. I have done oclt several times and I only lose approx ,5. I am raising cya.


    16 x 32 Sport Pool; Hayward Series Sand Filter S244T
    15,000 Gallons, In Ground with New Vinyl Liner
    Pool approx. Five Years Old. Live in KY

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    Texas Splash's Avatar
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    Re: Is adding around 100 ounces of bleach per day

    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!

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