Brown spots

[PoorPoolOwner]

Can someone please tell what these rusty looking spots are, and how to rid them? Disregard our faded liner, please. TIA

 

[Mdragger88]

Do they scrub away?
Try these steps to identify

Stains in Your Pool

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[PoorPoolOwner]

Do they scrub away?

No, I have tried scrubbing them with a brush and also with my foot.