I got my questions quickly answered when I enquired about whether I could use reverse osmosis water and, or tap water only. I was told to use only tap water. But I wanted to know more since tap water has many toxic things in it that could be unhealthy and this was not addressed in the short answer I received. So I am dissatisfied with the answer which did not directly address my question in which I wanted to know why tap was seen as better than the reverse osmosis water which is cleaner???