I have a new gunite pool with two copper spillways on one end. The pool has been in service for about 30 days now. It also has a SWG and the salt was just added last week. I have two white dogs that swim in the pool and noticed this week they were getting a green tint in their hair. I have a weekly pool service from the company that installed the pool. Since I just noticed this happening since the salt was added, I am wondering if copper from the spillways could be adding copper to the pool water. If so, what can I do to prevent them from becoming green again? I know it would be great for St. Patrick's day, but the rest of the year they look much better white.