I am not a new pool owner but I am new here. I have had my 15x30 oval for 8 years.
This past spring I had the liner replaced due to stubborn water rings and several holes in the liner. Everything has been fine all year but when I got in yesterday to clean it I noticed blotchy grayish spots on the pool bottom. I tired scrubbing with pool brush and even tried a Mr Clean eraser with no luck. It appears to be permanetly stained. There are 2 bigger spots and several smaller ones. One even appears to be almost a full circle. Nothing has been sitting on the bottom of the pool that would cause this. It has been pretty clean most of the year. It just started getting some green algae this past weekend, but I know how to get rid of that.
Has anyone ever had such a problem. What could have gone wrong? Any ideas or comments would be great. Thanks and I look forward to browsing this forum. It looks like there is a bunch of useful info out here.