First of all I want to express my gratitude towards many experts and experienced persons for the time spent for answering our questions.
I do have a question regarding the metal stains in pools or spas that are sanitized with bromine. Since bromine is a less powerful oxidizer is it less likely to get metal stains if cooper or iron is present in the water? I am using bromine, and cooper is present in the water, but I do not have any stains. I do keep the Ph at 7.4.