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Thread: tgib123 - mustard algae

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    Join Date
    Jul 2013
    Location
    Long Island, NY
    Posts
    3

    tgib123 - mustard algae

    Split fromhttp://www.troublefreepool.com/the- ... 37535.html Please don't hijack another's thread. I have started a new one for you. duraleigh

    based on the descriptions that I read I believe i had/have mustard algae - low chlorine level led to slippery floor & walls, even yellowbrownish foam on top of water. The buildup on the floor would seem to come up just by walking through it, but when i tried to vacuum it up, it did not work. I had only been shocking at 1 lb per 2 weeks. I learned that for my 13K gal pool I should shock with 2 lbs. and brushed the walls. This did the trick- the mess on the floor came up easily with the vacuum and 1 month later (at constant chlorine/ph levels) there is still no slimy feel anywhere.
    The problem is that the water became cloudy after the shock, so i cleaned then ran my cartridge filter for 3 days non-stop, but cant get rid of it. I am about to clean the filter again and maybe use a coagulant. Any thoughts?
    15'x30'x52" Above Ground- 12,200 gal; Hydromax Black Diamond Cartridge Filter-120 sq ft; Speck SS A91 1.5 hp pump;

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    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: tgib123 - mustard algae

    You don't shock at a number of pounds per week. You do a SLAM - Shock Level and Maintain where you raise the Free Chlorine (FC) to a high level and that is determined based on the Cyanuric Acid (CYA) level and you add whatever amount of chlorine is needed to maintain that level. I suggest you read the SLAM article as well as others in the Pool School. You also need to get a proper test kit as well (see Test Kits Compared).
    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
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Join Date
    Jul 2013
    Location
    Long Island, NY
    Posts
    3

    Re: tgib123 - mustard algae

    thanks. will try this weekend.
    15'x30'x52" Above Ground- 12,200 gal; Hydromax Black Diamond Cartridge Filter-120 sq ft; Speck SS A91 1.5 hp pump;

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