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Thread: How much bleach is normal

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    Join Date
    Jun 2011
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    Shelbyville, Indiana
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    How much bleach is normal

    This is the second year we have been using the BBB method with great success. Last year was the best season we have ever had with our pool and we have had this pool for over 20 years.

    The forum has been a great resource for information and that has given us confidence the chemistry of the pool is perfect at all times.

    My question is concerning how much bleach is normal. We are consuming approximately three (3) 96 oz bottles of bleach (6%) per day. I do not recall using this much last year, but we have had an unusually hot spring and summer with temps in the 100's.

    Could someone comment on our current usage??

    Our numbers are as follows:
    Water Temp - 82 deg
    FC - 5
    CC - 0
    TC - 5
    PH - 7.6
    TA - 110
    CH - 300
    CYA - 55

    Thanks,

    Dan
    Vinyl Liner-24K-2 skimmers-bottom drain
    Sta-Rite sand filter
    Sta-Rite 1HP Pump
    Circupool RJ-45 SWG
    TF100 Test Kit

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    Mod Squad jblizzle's Avatar
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    Re: How much bleach is normal

    it is "normal" to use 2-4ppm of FC per day. Use poolcalculator to see how much bleach that equates to for your pool size.

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    Jason, TFP Moderator
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    Richard320's Avatar
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    Re: How much bleach is normal

    Pool Calculator says 96 oz of 6% will raise FC 1.9 in a 24000 gallon pool. So, you're using 5.7ppm per day. That sounds a little high. Any chance you're buying an off-brand of bleach that cut the strength but kept the same price?

    You have a TF100, maybe it's time to run the overnight loss test. and see if there's anything in there lurking.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Join Date
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    Re: How much bleach is normal

    Quote Originally Posted by Richard320
    Pool Calculator says 96 oz of 6% will raise FC 1.9 in a 24000 gallon pool. So, you're using 5.7ppm per day. That sounds a little high. Any chance you're buying an off-brand of bleach that cut the strength but kept the same price?

    You have a TF100, maybe it's time to run the overnight loss test. and see if there's anything in there lurking.
    Am uising Aldi's 6% bleach.

    Ran the overnight loss test and only came up with 0 fc loss.

    We have had no rain for almost 4 weeks and a lot of hot direct sunlight on the water. Any other ideas??

    Thanks,

    Dan
    Vinyl Liner-24K-2 skimmers-bottom drain
    Sta-Rite sand filter
    Sta-Rite 1HP Pump
    Circupool RJ-45 SWG
    TF100 Test Kit

  5. Back To Top    #5
    Richard320's Avatar
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    Re: How much bleach is normal

    Next factor: has it been getting a lot of use? The heat may account for some loss, but sweaty bodies probably account for more.
    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.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  6. Back To Top    #6

    Join Date
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    Shelbyville, Indiana
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    Re: How much bleach is normal

    Quote Originally Posted by Richard320
    Next factor: has it been getting a lot of use? The heat may account for some loss, but sweaty bodies probably account for more.
    Yes, 3-4 kids a day in for 2-3 hours, but little suntan lotion.

    The pool just does not have that sparkle to it like it had last year. Any thing I can do to get the sparkle back??

    Dan
    Vinyl Liner-24K-2 skimmers-bottom drain
    Sta-Rite sand filter
    Sta-Rite 1HP Pump
    Circupool RJ-45 SWG
    TF100 Test Kit

  7. Back To Top    #7

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    Re: How much bleach is normal

    See this thread that is reporting similar issues, though in that case suntan lotion is more likely the culprit. You can try raising your FC level and running the pump longer to see if that clears the pool faster. You could also try using DE in a Sand Filter for finer filtration (though that wasn't the issue in the other thread where a DE filter with cellulose media is already being used).
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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