Just wanted to say a quick howdy and to thank everyone who contributes their knowledge and experience here! I joined 2 days ago, and have already learned a TON. I received my big new test kit in the mail today and already feel smarter. We moved here almost 3 years ago from Cali and I have been battling this pool for 2 summers...hopefully this is the year it learns to play nice. This year the vinyl liner is shot, but we hope to limp through another summer.