I just spoke with a guy from a zoo who said that I had to prepare the water, before putting my Axolotl in it. And this cleaning of the water process would take up to 1 week. Then I spoke with another guy who said the water contained chlorine, and to remove it, I had to either buy some special thing to do it; Or let the water stay for about 1 hour. And from what I've heard, some people change the water once a week. So wouldn't it be extremely annoying and hard to prepare the water every single week, so it could get ready for the next week? Imo the second solution sounds more right. But what is the actual way to do it?