White Film on Pool Tile Waterline

SandyLA

New member
Oct 16, 2021
2
Los Angeles
My pool is about one year old. Recently notice this white film near the waterline on the ceramic tile. I've tried vinegar and a nylon brush, which hasn't worked. I've thought of a pumice stone but worried that may take the finish off. Can anyone recommend a way to get it off? Thanks!
 

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