I've taken advantage of a lot of good advice on this forum and now I'm making my first post. This winter we received 12 inches of rain in 36 hours. While pumping water out of my pool to keep it from over-flowing I must have over did it and the vinyl liner became unset. The water level in the pool remained low, just below the lowest step but entire bottom of the pool filled, from mid-december until now. I finally got a hold of a pool company to come by and they are telling me that I need a new liner because the water level was too low for too long. The liner was replaced in 2011,so its about 5 years old. My question, does this sound legitimate? I expected the liner to last at least 3-4 more years. Is there anything I can do like add additional water to the pool that will help me or is it too late? Thanks.