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Thread: problem after black algae killer added

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    problem after black algae killer added

    Hi there:
    I need some help. I had a little black algae starting to pop up. I went to Leslies. They gave me black algae killer. I put 1qt 6 ounces in . Then scrubbed for 2 hrs. Then added phosfree and ran for 2 days. I think all algae is gone and the pool is crystal clear but there is this lingering smell and foaminess to it two weeks later.

    Chris 30k gal, in ground, Stockton, ca. all readings normal
    Chris M. 20k, inground, defilter, pebbletek, 1hp motor,Tiger Shark QC (crappy pool cleaner), TF-100

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    Re: problem after black algae killer added

    Telling us all of the levels are good isn't specific enough. Our ranges are different from pool store ranges. What are the ingredients in the Black algae killer?
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    Re: problem after black algae killer added

    copper ethanolamine complex mixed 9.5 %
    ammonia chloride 26 %
    other ingredients 64%
    Chris M. 20k, inground, defilter, pebbletek, 1hp motor,Tiger Shark QC (crappy pool cleaner), TF-100

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    Re: problem after black algae killer added

    Other than the smell and foam, is your water clear?

    We will still need water test reults to help you get back to normal, but I can tell you in advance, chlorine is the only thing you will probably need. Stay away from the Pool Store.....they are hurting, not helping.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: problem after black algae killer added

    Thanks for your help on my
    foam and smell problem:
    readings:
    chlorine 5ppm
    ph 7.2
    alkalinity 80ppm
    water is crystal clear
    Chris M. 20k, inground, defilter, pebbletek, 1hp motor,Tiger Shark QC (crappy pool cleaner), TF-100

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    Re: problem after black algae killer added

    1. Don't put anything with copper into your pool.

    2. You didn't post your CYA level, but even without knowing that, I would suggest you elevate your chlorine to about 8-10ppm and then hold it that high until the foam and smell are gone.....probably only take a day or two.

    3. read "The ABC's of Pool Water Chemistry" up in Pool School. That'll help keep you out of the pool store that caused your problems.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: problem after black algae killer added

    Thank you. I said 5ppm because thats as high as my tester went. It could be higher. Are u saying just add motre chlorine or should i shock it.
    Also you want me to test for CYA but I don't have a terst for that. Whats the best test kit to but
    Chris M. 20k, inground, defilter, pebbletek, 1hp motor,Tiger Shark QC (crappy pool cleaner), TF-100

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    Re: problem after black algae killer added

    Best kit is also the best value, and that is the TF-100 from http://tftestkits.net/
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: problem after black algae killer added

    You cannot manage your pool water correctly without knowing and understanding your CYA level. You really do need a better test kit.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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