I was playing a fetch game with my kids yesterday with swim goggles and when I went to the bottom in
the deep end I noticed several tiny ( BB-size) blackish spots which did not come off when rubbed. In fact
some of them appeared to be eating away at my liner as they felt indented. I managed to pick up a BB size
blackish ball and bring it to the surface. It was very hard. My concern is my liner. Has anybody ever heard or
seen anything like this? I have not added any type of solid chemical for weeks ( salt being the last,but I always
predissolve) and as far as I know the kids havent put anything in. I do have alot of trees around but cant
imagine anything that could stain let alone eat away at vinyl. Thanks
the deep end I noticed several tiny ( BB-size) blackish spots which did not come off when rubbed. In fact
some of them appeared to be eating away at my liner as they felt indented. I managed to pick up a BB size
blackish ball and bring it to the surface. It was very hard. My concern is my liner. Has anybody ever heard or
seen anything like this? I have not added any type of solid chemical for weeks ( salt being the last,but I always
predissolve) and as far as I know the kids havent put anything in. I do have alot of trees around but cant
imagine anything that could stain let alone eat away at vinyl. Thanks