We are in the final stages of finalizing the plans for our 18x36 inground vinyl pool. Both builders insist on using steel walls and have assured me that there will not be any issues with using a salt water system. However, I continue to read a lot of literature on the internet about salt water and steel walls and that it will cause problems much sooner than expected. I have also considered copper ionization but do not know much about that process. I am not opposed to old-fashioned chlorine but I would like to stay away from it if possible. I am looking for any advice or real-life experience on whether or not I should pursue the salt system with this type of inground pool.