I have been looking around on the website and I believe that what I am seeing is that I can use the electrocatalytic oxidation option On my new SWG and it won't be a problem like the old One that had copper... I know it's been asked and answered , but just so I get an answer in one place the is usable for me Without having to memorize what I read and several other post and combine them to get to the answer, I was hoping someone could verify that I'm understanding this correctly before I start setting up everything...happy swims!!!