Reading a little more on the forum...something had to dump the copper into the pool. The pump motor was corroded and we had to replace it this season. Could that have been going on late in the season last year and caused the metal in the water? We closed for the winter and reopened with a new motor. Should I get a copper test kit to see what the level is and what is a safe level of metal. I read that you have to drain to get rid of it. Can we not use a metal out product?