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Thread: Cleaning Liner Stains?

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    appstategrad's Avatar
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    Cleaning Liner Stains?

    I just opened Saturday. Is there any way to clean the liner stains before I raise the water again? The picture quality is not that great--to me it looks worse in person.

    Thanks!

    IMG_20160313_192012351_HDR23.jpg
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad pooldv's Avatar
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    Re: Cleaning Liner Stains?

    Do you think they are organic stains from leaves or something? You can rub a trichlor puck on it to see. If it is an organic stain then you can go ahead and open and hold your FC high and brush it and it should clear up in a week or two. Hold FC up close to SLAM level or a little less for your CYA. Chlorine CYA Chart
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    appstategrad's Avatar
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    Re: Cleaning Liner Stains?

    Thank you for responding pooldv! I don't know. Anything else I can use instead? I don't use trichlor pucks...I use Clorox to open or if there is an algae issue, and then SWG throughout the season.
    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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    Mod Squad pooldv's Avatar
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    Re: Cleaning Liner Stains?

    Yeah, me either. I've never owned a puck. If you've been running the pool since 2014, or longer, on TFPC and this is the first time you have had this issue then it is very likely organic. So keeping your chlorine elevated should clear it up.

    If it is white and rough then it could be calcium scale, filling and keeping your CSI negative -0.2 to -0.4 for a while, weeks, and brushing will put the scale back into suspension. Then keeping your CSI negative -0.1 to -0.2 always will prevent it in the future. Poolmath will give you your CSI score after you input your test results. CSI is managed by tweaking PH and TA.

    Do you have hard water?
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    Re: Cleaning Liner Stains?

    It is hard to tell from this picture but it looks to me like a slightly bleached out liner up to your normal fill line?
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Re: Cleaning Liner Stains?

    If 8th scum you can use a baking soda pas5e, or "off the wall" from bioguard.
    24' round above ground, 13500 gallons, vinyl liner, 18" Sand Filter

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    appstategrad's Avatar
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    Re: Cleaning Liner Stains?

    No usual signs of hard water inside the house (scaling, stains, etc). I will look at the CSI info next time I put in my test results. Thank you!

    The liner color is fairly consistent all the way around. It could be bleached out slightly, but there is obvious staining too (like a brownish tint). I'll try the baking soda or look for the "off the wall" item. Thank you all for the suggestions!


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    ~ 18.5' x 36.5' inground Grecian pool with vinyl liner
    ~ approximately 23,000 gallons
    ~ AquaRite Salt Water Generator cell size t-9
    ~ 1.5 HP Hayward Pump and Hayward Sand Filter
    ~ TF-100 test kit

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