phore Posted May 20, 2012 Hey has anyone had any experience with these machines. I have had one for years. It seems to be a useful tool, but i have a question a more experienced user might be able to help me with. Should i run this on purely negative ion setting or should i let it alternate between positive and negative. What are the benefits of using positive compared to negative ions. Thank you. Share this post Link to post Share on other sites
