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Thread: Green and black spots on my vinyl liner

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    Join Date
    Jul 2014
    Location
    St. Louis, MO
    Posts
    5

    Green and black spots on my vinyl liner

    Hello all,

    I am very new to this forum and need a little advice.

    FC 12.0
    CC .5
    pH 7.4
    TA 120
    CH 360
    CYA 50

    I have green and black spots on my pool liner and green on my pool ladder. I found this site last week and got my TF-100 test kit and brought my number to above. I am currently in the process of SLAMing. So I added bleach this morning per the calculator to get me to FC of 20. (My CYA was 0 and pH was 8.0 so I corrected those first).

    The water is clear and I plan to continue to SLAM per instructions.

    So - what do I do about the green and black. Scrub down with a brush? Can you recommend a brush to use?

    The black spots are stubborn and don't brush off very easily.

    Thanks in advance for any advice!
    Attached Images Attached Images
    11100 Gallons AG vinyl (21' x 52" round)
    Jaccuzi Splash Pak 2 speed cartridge filter pump
    Installed in 1998
    TF-100 test kit

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    In the Industry

    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,085

    Re: Green and black spots on my vinyl liner

    The pool appears to have been neglected for a long time. You will nee to hold the chlorine ar SLAM value for a long time and you will have to brush the spots a couple of times daily to expose the algae to chlorine.

    I would not let the chlorine drop below 20 ppm and I would get a scrub brush with a long handle and go to work. You have a big job but it is doable.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Jul 2014
    Location
    St. Louis, MO
    Posts
    5

    Re: Green and black spots on my vinyl liner

    Thanks for the reply.

    The pool has not been neglected - I was just following the advice of the kids in the pool store.

    For the last 5 years or so when I open the pool it is dark green. This year was the worst by far.

    I added a ton of shock the pool store sold me and this is what I was left with. There was nothing on the liner last year and it was just replaced the year before that.

    After I got the water clear and vacuumed several times I decided the pool store was not giving me the proper advice, and that's how I ended up on this site.

    I'll continue to SLAM.

    Any advice on a good brush? I have a 12" brush but it difficult to get to the wall and the joint at the bottom between the wall and floor.

    Thanks again for this site! I will NEVER take the advice from the high school kids at the pool store again!
    11100 Gallons AG vinyl (21' x 52" round)
    Jaccuzi Splash Pak 2 speed cartridge filter pump
    Installed in 1998
    TF-100 test kit

  4. Back To Top    #4
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: Green and black spots on my vinyl liner

    Welcome and glad you found TFP

    The only pool brush for a vinyl pool is nylon; however, the Wall Whale gets rave reviews!

    You came on here loaded for bear with all the reading you have done, ordering/having the TF100 Test Kit, and already SLAMing the pool!

    btw, the black spots could be copper? Do you know if any was added, maybe thru algaecides?
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5
    Divin Dave's Avatar
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    Oct 2013
    Location
    Longview, Texas
    Posts
    4,926

    Re: Green and black spots on my vinyl liner

    Skulker,
    you can get a nylon brush that fits onto the end of a pool pole at walmart, home depot, lowes, pool store etc. they come in different lengths, usually 18 and 21 inches.
    If you dont have the pole, you can get that there too.

    The wall whale brush does wonders on the sides. They cost a few dollars more, but is well worth it
    If you want a wall whale, you'll likely have to get that online.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  6. Back To Top    #6

    Join Date
    Jul 2014
    Location
    St. Louis, MO
    Posts
    5

    Re: Green and black spots on my vinyl liner

    Thanks for the suggestions.

    I saw the wall whale online and will order it. I already have a pool pole. I'm thinking a 6" brush will help with the bottom joint as well as a scrub brush (nylon) for the ladder.

    I don't know about the black spots being copper. The pool store told me to add "Black Algae Out" by Sparco. It doesn't list copper on the bottle but who knows? I only added what they told me. And I was a dummy and did it!

    I read a post here that suggested rubbing the black spots with vitamin C to determine if they are metal or not. Once I get rid of the green I'll work on the black.

    The reason I use "skulker" is that I tend to lurk and read a lot in the forums before I join. I think I can ask "better questions" that way.

    Thanks again for the replies!
    11100 Gallons AG vinyl (21' x 52" round)
    Jaccuzi Splash Pak 2 speed cartridge filter pump
    Installed in 1998
    TF-100 test kit

  7. Back To Top    #7

    Join Date
    Jul 2014
    Location
    St. Louis, MO
    Posts
    5

    Re: Green and black spots on my vinyl liner

    Update:

    Things are looking much better. I found a nice brush at the local pool store

    "Swim Time NA315 Brush Around 360-Degree Wall and Floor Pool Brush"

    It's really great for the floor / wall joint in the AG pool. The whale is on the way too.

    My chlorine usage has already started to go down. I'm using all my POP.
    11100 Gallons AG vinyl (21' x 52" round)
    Jaccuzi Splash Pak 2 speed cartridge filter pump
    Installed in 1998
    TF-100 test kit

  8. Back To Top    #8

    Join Date
    Jul 2014
    Location
    St. Louis, MO
    Posts
    5

    Re: Green and black spots on my vinyl liner

    Update:

    I am now letting the FC go down to the target value.

    Thanks to this site and the help here my pool is BEAUTIFUL!

    FC = 9.0
    CC = 0
    pH = 7.4
    TA = 100
    CH = 350
    CYA = 60

    Thanks for all the help, posting, and suggestions.

    And thanks for this site!

    http://i1137.photobucket.com/albums/...o/P1010001.jpg
    http://i1137.photobucket.com/albums/...o/P1010002.jpg
    http://i1137.photobucket.com/albums/...o/P1010003.jpg
    Last edited by skulker; 08-01-2014 at 01:24 PM. Reason: Adding photo URLs
    11100 Gallons AG vinyl (21' x 52" round)
    Jaccuzi Splash Pak 2 speed cartridge filter pump
    Installed in 1998
    TF-100 test kit

  9. Back To Top    #9

    Re: Green and black spots on my vinyl liner

    Nice work--it looks great!
    Outdoor 14,000 gallon IG plaster pool built in 2000 with spillover spa, 2 hp WhisperFlo pump with MagneTek motor, Sta-Rite cartridge pool filter with 300 ft2 filtration area and 0.33 gpm/ft2 filtration rate, Aquabot Rapids 4WD robotic pool cleaner, Raypak digital gas heater, and Intermatic mechanical timer located in the Dallas-Fort Worth metroplex

  10. Back To Top    #10
    mickey4paws's Avatar
    Join Date
    Apr 2009
    Location
    S.E. MI
    Posts
    562

    Re: Green and black spots on my vinyl liner

    Great job! Your pool looks nice and sparkling

    IG 12' x 39' - 20k Gallons - Vinyl Lined - StaRite Cristal-Flo II 26" Sand Filter - Hayward SuperPump 1 hp - Dolphin Dynamic autocleaner - Lochinvar Energyrite gas heater - Aqua Rite SWCG T-15 - TF100 Test Kit - Skimlite Duallly 9016 pole (great pole)

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