I have a few "rust color spots" at the bottom of my pool, thought It was leaf stains but after diving down with goggles and examining closley I noticed hairline cracks about 1-2" long and a rust spot in the center. The pool is about 1.5 years old now. What should I do as far as fixing this myself. Should I try A+B epoxy putty and seal it, or is this going to get worse and the cracks will get longer. If i seal it with A+B epoxy the epoxy will probably crack in time with the pool. I think the rust spots are from the rebar getting wet. Thanks for all replies.