Hi Marie.

The more I think about it, the more I think this guy was full of it. He talked too fast and tried to scare me into scheduling an appointment. After your first post I did a little research on osmotic blistering. You were exactly right by the way. It is caused by water penetrating the gel coat. I think it can cause problems if let go for a long time (like years). I also called Water World in NJ and the guy who answered the phone did give me the name of a guy they use for repairs.

My biggest problem is that I absolutely do not want to call my installer because I can't believe a word that comes out of his mouth, and I can't get the manufacturer to respond at all.

What I do have in my favor is this forum. I just wish I had discovered it before I bought my pool. I would have used a different company, obviously.