I have vinyl lined inground pool with black streaks appearing on the bottom. They are impossible to remove and I think they may be metal stains. What can remove these?
tough stains
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- Last Post 10 May 2018
Jeff1958
posted this
10 May 2018
InyoRob
posted this
10 May 2018
Hello Jeff - We would recommend trying Stain Free Extra Strength by Natural Chemistry. This is an industrial strength ascorbic acid.
