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Thread: Where does those small air bubbles come from?

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    Join Date
    Dec 2015
    Location
    San Jose, CA
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    Where does those small air bubbles come from?

    Hello
    I just completed a SLAM, the water is back to clean now. When I brush the pool everyday, I find there are many small air bubbles on the vinyl under water (not foaming actually, but like the air bubbles when you put Coke in the glass, but they are much smaller). Where do they come from? Anything I should worry about?

    Last test result:
    FC: 39 (just stopped adding more 10% liquid sodium hypochlorine)
    CC: ~0
    PH: N/A (but before SLAM, it was 7.4)
    TA: 70
    Cal Hardness: 100
    CYA: 100

    Thanks!
    10,200Gals, 10X34, 3'-4'4'' deep, rectangle in-ground vinyl pool; Solar cover;
    3/4HP Advantage pump; CC150 Pentair cartridge filter;
    NC22 SmartPool Smart-Kleen robot; and a 2-wheel PoolCleaner of HAYWARD
    Tailor K2006 test toolkit;

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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: Where does those small air bubbles come from?

    Are these bubbles near your returns? Do you have a SWG?
    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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    Join Date
    Dec 2015
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    San Jose, CA
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    Re: Where does those small air bubbles come from?

    I don't have a SWG, and these bubbles are not near my returns either, but just spread out on the interior wall randomly.
    10,200Gals, 10X34, 3'-4'4'' deep, rectangle in-ground vinyl pool; Solar cover;
    3/4HP Advantage pump; CC150 Pentair cartridge filter;
    NC22 SmartPool Smart-Kleen robot; and a 2-wheel PoolCleaner of HAYWARD
    Tailor K2006 test toolkit;

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    Divin Dave's Avatar
    Join Date
    Oct 2013
    Location
    Longview, Texas
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    4,926

    Re: Where does those small air bubbles come from?

    As the chlorine killed the algae during your slam, there was a lot of outgassing from the algae being oxidized This is the most probable cause of the bubbles. Its nothing to worry about.

    Once you get your pool properly balanced when the slam is done, particularly the FC and pH, and you brush the pool walls, the bubbles will subside.

    hope this helps,
    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 !!

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    Join Date
    Dec 2015
    Location
    San Jose, CA
    Posts
    31

    Re: Where does those small air bubbles come from?

    Thanks, Divin. It does look like what you said, now, about 1 week after slam, everything is fine and the air bubbles gone.
    10,200Gals, 10X34, 3'-4'4'' deep, rectangle in-ground vinyl pool; Solar cover;
    3/4HP Advantage pump; CC150 Pentair cartridge filter;
    NC22 SmartPool Smart-Kleen robot; and a 2-wheel PoolCleaner of HAYWARD
    Tailor K2006 test toolkit;

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