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Thread: Need advice on BBB

  1. #1
    Join Date
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    Default Need advice on BBB

    Greetings All:
    I am having trouble getting a clear pool. It is green with algae. My pool is L-shaped 40,000 gallon with a vinyl liner and a sand filter. I have been shocking and testing it and here are the pool store test results:

    Free chlorine: Over10ppm
    TC: over 10ppm
    combined chlorine 0.0 ppm
    P.H. 8.2
    Hardness 30 ppm
    Alkalinity with stabilizer correction 118 ppm
    CYA 75ppm

    Tonight I added 1 gallon of muriatic acid and 8 (174 ounces) jugs of ultra bleach from Walmart. I also swept. PLease advise. I have seven more gallons of bleach. Should I add them? I live in hot ,humid northeast Texas.
    Thanks for any help,
    Jennifer

  2. #2
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: Need advice on BBB

    Right now you have two main things:

    You need to add bleach or liquid chlorine to get your FC (or TC if that's all you have) to 20ppm, and keep it there until all the algae is dead and gone (may take 2 weeks).

    You need to lower you pH to between 7.3 and 7.5. This will make the chlorine work far more effectively.
    Carl

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    Watermom's Avatar
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