Hello,
First time pool owner and my first post, just had a pool renovated and we selected Quartz Scape Aruba Sky as our finish, we noticed a few small (size of pencil eraser) dark spots on our tanning ledge, I tried a little muriatic acid and even a pumice stone to remove the spots, so far neither of my ideas worked, was hoping someone
could offer a solution to remove the spot
Thank you VERY MUCH
First time pool owner and my first post, just had a pool renovated and we selected Quartz Scape Aruba Sky as our finish, we noticed a few small (size of pencil eraser) dark spots on our tanning ledge, I tried a little muriatic acid and even a pumice stone to remove the spots, so far neither of my ideas worked, was hoping someone

Thank you VERY MUCH

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