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Thread: What is this???? Please

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    Join Date
    Dec 2015
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    Citrus Springs,Fl
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    11

    What is this???? Please

    We have tried alage remover, for black algae and so far nothing is happening.

    Is this maybe just a stain of the concrete?

    Any thoughts or suggestions please...Thanks so much
    Attached Images Attached Images
    In ground pool and was built in 2000 and is concrete I am guessing. It measures 14.5 wide and 24 long. It is not square nor rectangular. I have pictures if needed and can always take more. It is a Pentair system with propane heater Purex Triton, with Pentair filter ( cartridge) with a 1.5 hp sf1.1 pump( that is getting replaced) Will be new Pentair vs pump/motor 342000/01( on it's way here now) and test kit TF-100

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: What is this???? Please

    Might be calcium scale...certainly not sure. We are only guessing wildly.

    If you can post a set of test results, that will be very helpful.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Dec 2015
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    Citrus Springs,Fl
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    Re: What is this???? Please

    Okay got the resluts..Hope I did this correctly

    CL=5
    BR=10
    FC=10
    CC=1
    TC=11

    CH=425
    TA=50
    CYA=90

    Thanks for helping me out with this
    In ground pool and was built in 2000 and is concrete I am guessing. It measures 14.5 wide and 24 long. It is not square nor rectangular. I have pictures if needed and can always take more. It is a Pentair system with propane heater Purex Triton, with Pentair filter ( cartridge) with a 1.5 hp sf1.1 pump( that is getting replaced) Will be new Pentair vs pump/motor 342000/01( on it's way here now) and test kit TF-100

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    Mod Squad YippeeSkippy's Avatar
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    Jan 2012
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    'burbs of Augusta, Georgia
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    Re: What is this???? Please

    You have a chlorine pool I take it? So ignore the Bromine side of the block.

    Have a pH to share with us?

    Do you put any algaecides or metal containing products in the pool?
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

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    Dec 2015
    Location
    Citrus Springs,Fl
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    Re: What is this???? Please

    Okay sorry, cant read my chicken scratch...

    PH=6.8

    I just recently put an alage fighting thing in as thought it was black algae..Now I know it is looking like lack of calcium pitting


    Thanks again for the help all
    In ground pool and was built in 2000 and is concrete I am guessing. It measures 14.5 wide and 24 long. It is not square nor rectangular. I have pictures if needed and can always take more. It is a Pentair system with propane heater Purex Triton, with Pentair filter ( cartridge) with a 1.5 hp sf1.1 pump( that is getting replaced) Will be new Pentair vs pump/motor 342000/01( on it's way here now) and test kit TF-100

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    Re: What is this???? Please

    Looks like extensive copper staining. The turquoise is one form of copper; the gray and black are another copper compound.

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    Join Date
    Dec 2015
    Location
    Citrus Springs,Fl
    Posts
    11

    Re: What is this???? Please

    Any suggestions to clean this up. I mean it is clean water but just so unsightly.

    Thanks
    In ground pool and was built in 2000 and is concrete I am guessing. It measures 14.5 wide and 24 long. It is not square nor rectangular. I have pictures if needed and can always take more. It is a Pentair system with propane heater Purex Triton, with Pentair filter ( cartridge) with a 1.5 hp sf1.1 pump( that is getting replaced) Will be new Pentair vs pump/motor 342000/01( on it's way here now) and test kit TF-100

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    Re: What is this???? Please

    Copper staining that bad is not easy to clean.
    How old is the plaster?
    What is the original color of the plaster?
    Try scraping off the top layer with a wood chisel to see what the plaster looks like under the staining. Don’t gouge the plaster. Just do a nice, clean, thin scrape. It will leave a mark, so don’t do it anywhere a mark will look bad.

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