I'm new to the site and like all "newbies", I have a problem. I have a yellowish/brown that ring (feels a little rough) at the waterline around my pool but only on the side facing the sun. The real problem, however, is if I try to clean the ring, the decorative pattern also comes off. Even if I scrub gently, the pattern comes off. So far I've only tried to clean a small portion, less than an inch, but I'm afraid that the liner may be damaged. Also, I don't want an obvious discolored ring around the pool. It would simply look aweful. I have had the pool for about two years and have never had this problem. I've also tested the water and everything seems to be normal and balanced. Any ideas about what could be causing the ring, if the liner is damaged and how can I get rid of the ring? Thank you all in advance and any help will be greatly appreciated.