We had a copper spillover water pot installed with out pool last year. The pot is copper with a black power coating on the outside. The power coating has started to discolor and flake off. The manufacturer is going to replace it, but would like to replace it with a 316 marine grade stainless steel one. It too would have the black power coating on the outside, so it will look just like the one that we have. They said that the power coating adheres better to the stainless, but we ordered the copper initially because the manufacturer says on their web site that stainless is not recommended with a salt water pool. I was just concerned and wanted to get some opinions on using the stainless as opposed to the copper. Thanks in advance for you thoughts.