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Thread: Weird Algae problem I think. Need Help Quik !!

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    Sep 2014
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    Weird Algae problem I think. Need Help Quik !!

    Last summer I got this stuff in my pool and ended up having to drain it to get it out. And now I'm having it again. Looks just like normal green algae but only on the walls. Reg dose of shock seems to knock it back, but you can't brush the remains off the wall. This stuff turns into concrete. I mean it will cause skin abraisions if you rub the wall to hard. The only thing I found that will even begin to get this stuff off is scotch brite scowering pads, and theres still a remnant on the liner of where it was. I have an above ground pool and I can't keep getting in there every week or so for hours gettin this stuff off the walls. What I need to know is what is this stuff and has anyone else had this issue and found a better fix?

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    Algae Problem I think ??

    If I posted this twice- sorry
    Got this stuff that looks like green algae only on the walls. Reg dose of shock knocks it back, but I can't brush off the remains. This stuff turns into concrete. Will cause skin abraisions if you rub aganst it. Only thing I found that will even start to take it off is scotch brite scowering pads. and there's still a bit left. What is this and has anyone else had to deal with this. Above ground pool with liner. Also: I'm close to St Louis if it's a regional thing.
    Thanks

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    Wildcat's Avatar
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    Re: Algae Problem I think ??

    I am sure the consensus is you need to
    Tell us about your pool size, type etc.
    Tell us your numbers

    PH
    FC
    CC
    TA
    CYA, very important
    CH even

    Read Pool School and about SLAM process to kill TJ algae once and for all
    10000 Gal, IG Pebbletec, pop up cleaners,Hayward EcoStar VS, 425 sq ft Hayward Cartridge, waterfall feature

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    Mod Squad jblizzle's Avatar
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    Re: Weird Algae problem I think. Need Help Quik !!

    Welcome to TFP!!!

    I agree with the above. We need a full set of test results and details about your pool will be helpful.

    My guess ... multiple problems. The algae is due to your chlorine (FC) level being too low for your stabilizer (CYA) level. The sandpaper is likely calcium scaling due to a high calcium (CH) level coupled with high TA and pH.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Weird Algae problem I think. Need Help Quik !!

    OK 21 ft round above ground. with a pentair sand filter and 3/4 horse pump. Thing is, I've had this pool for years and never came across anything like this. Only seems to show up after a rain now that I think about it and It's something new. Never had to deal much with the water ph hardness. Never had a problem till now. All Ive had to do was keep the FC at a decent level and shock about every week or so. Never had any problem till now. I guess I could have it tested though? Check back later.

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    Mod Squad jblizzle's Avatar
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    Re: Weird Algae problem I think. Need Help Quik !!

    CYA and CH can build up over time, depending on how you chlorinate. We see stories like yours often.

    There is a lot you can learn by checking out Pool School.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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