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Thread: outdoor concentrated bleach

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    outdoor concentrated bleach

    I apparently picked up a bottle of the Home Depot brand outdoor concentrated bleach when I picked up regular bleach (they look very similar to someone trying to hurry and beat a thunderstorm). This jug makes up to 20 gallons. Can I use this in the pool after diluting it (or just straight) or is it better not to chance it?

    Also, I'm thinking I am fighting mustard algae but not sure, the water is green and very cloudy, but is holding a pretty high FC. CC has been 0.5 nearly every time I've tested the last week since I started treating, except for a couple of times it's been 1.0. Readings from this morning:

    FC 22
    CC 1.0
    CYA 40
    ph 7.2

    I added bleach to bring FC up to 24. When you go out to the pool you can smell the chlorine/bleach, and the readings are staying pretty high, I don't think it's been below the teens for several days. Do I just need to keep it at mustard level shock for a day, or several days, and be patient? Advice greatly appreciated! Previous algae treatments have always shown improvement within a couple of days, even though it took up to a week for the water to clear, but this time I have been shocking for a week and still not seeing much improvement yet.
    18 x 44 AG pool 20,000 gallons
    sand filter

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: outdoor concentrated bleach

    You should avoid using the outdoor bleach. It contains a chlorine resistant detergent that can cause persistent foaming.

    Nothing you have said suggests mustard algae. Mustard algae vanishes at regular shock levels, only to reappear as soon as you go back down to normal levels.

    Sometimes it takes a little POP (pool owner patience) to deal with algae. You are using the right approach, just keep at it. Remember to brush the entire pool once a day while at shock level.
    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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    Join Date
    Aug 2010
    Dallas, TX

    Re: outdoor concentrated bleach

    The fact you smell bleach means something's being killed by it.

    It took weeks to clear my pool. Hang in there!
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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  4. Back To Top    #4

    Re: outdoor concentrated bleach

    Thanks for the input, we'll save the outdoor bleach for the pressure washing on the house. Hopefully the green starts dissipating soon, and we can start using the pool
    18 x 44 AG pool 20,000 gallons
    sand filter

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