hello I have a question about the ro systems I know that most everything I am reading is talking about tap water so that leads me to this question.when I was raising discus there also was a lot of talk about the RO system and i understand the concept.But what about those of us that have well water?I raised my discus on it and never had a problem.I know I am comparing apples to oranges but what do you guys think..and please feel free to be as specific as you can ..Thanks Todd