Our pool is ~5 years old and all areas below the waterline showed faded color after the 1st season and then worsened in the 2nd & 3rd sessions. BR said the chlorine was too high but the weekly pool maintenance company records show 2-4ppm. It does not appear to be a scale formation like some posts suggested since it’s uniform throughout all surfaces (not a line) below the waterline.
Like many of the posts, BR has been in responsive, has anyone had luck with the legal process?