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Thread: Added way too much Black Alae Killer (Leslies)

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    Added way too much Black Alae Killer (Leslies)

    Well I screwed up and read the directions as per 1,000 gallons instead of 10,000 and well, yesterday I put 3/4 of a quart bottle of Leslies Black Algae Killer in my 10,000 gallon IG Saltwater Blue plaster pool. I am now looking at an extremely cloudy pool that foams and looks just downright nasty.

    Hey and guess what The black algae is still on the stairs!! Suprise Suprise!

    A couple of questions.

    1) Is it safe to swim...
    2) What do I need to do to:
    A) Get rid of the foam
    B) Eliminate the cloudiness.

    Any help would be much appreciated as I am supposed to have the neighbors come over to swim tomorrow ( Which I think is not going to happen)

    Thank you in advance!
    55k gallons, IG, Gunite w/pebble tec (dark grey), Sta Rite S8M150 50-124 fr, 2HP Sta Rite pump

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    duraleigh's Avatar
    Join Date
    Apr 2007
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    Sebring, Florida
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    Re: Added way too much Black Alae Killer (Leslies)

    I would shock the pool. I would not swim in it until it was cleared up.

    Read "How to Shock your Pool" up in Pool School and the "ABC's of pool water chemistry"

    Clorox will be the best item to shock your pool and it is the best way to get rid od algae. You don't need to spend the money on algaecides.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Added way too much Black Alae Killer Pool Testing Results

    I just went out and tested my pool... NOT GOOD Vacation & A Newbie
    As mentioned before I added way too much black Algae Killer in my pool when I got back from Vacation and just tested my pool...

    FC = 0.5
    Total Chlorine = 0.5
    PH = 7.5
    Alkalinity = 40ppm
    CaC03 Hardness = 140ppm
    CYA = 0

    If I understand the directions:
    RAISE CHLORINE
    16oz of bleach to raise Chlorine 1.5ppm 3 gallons to super chlorinate 25-30 ppm
    RAISE PH from 7.5 to 7.8 (10 drops of reagent) = 2.5 lbs of Borax
    Raise Alkalinity by 40ppm = 3.0 pounds of Baking Soda
    Raise CaC03 Hardness 80ppm = 8 pounds of CaC03 chloride Dehi
    CYA = ????? How much Cyronic acid????

    Do you have any guidance as to when I should add each component, how long between testing etc...

    Thanks in Advance!
    55k gallons, IG, Gunite w/pebble tec (dark grey), Sta Rite S8M150 50-124 fr, 2HP Sta Rite pump

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    Join Date
    Feb 2008
    Location
    Denton, TX
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    5,061

    Re: Added way too much Black Alae Killer (Leslies)

    You need to read Pool School and specifically, the sections on Shocking Your Pool and Defeating Algae.

    The best thing to do for now would be for you to lower your pH to around 7.2, shock the pool with bleach, and get some CYA in there. You can use the Pool Calculator (link in my sig) to find the dosages.

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    Re: Added way too much Black Alae Killer (Leslies)

    Thank you Very Much!!
    55k gallons, IG, Gunite w/pebble tec (dark grey), Sta Rite S8M150 50-124 fr, 2HP Sta Rite pump

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: Added way too much Black Alae Killer (Leslies)

    Correct me if I'm wrong but the active ingredient in the product you used contains copper - your copper levels could be very high right now - shocking could cause staining.

    I'd confirm what was in the product you used and if it was indeed copper - get the copper level tested by Leslie's and post back here before you proceed with shocking the pool.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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