I recently moved close to a river. I love going out there and feeding the fish, looking at plants, etc. I would like to create a river tank or riparium using plants and fish from the river. Can this be done? The tanks are beautiful, but I am not working at this time. I would be unable to purchase much at all. Has anyone ever tried this? Can you use river water at all, or is there too much decaying matter in it? I know I would need a water flow for the plants and fish, but I am confused as to how to do it. I have read several sites, some saying to use a power-head, and some saying NOT to! I feel like the more I read, the more confused I become. I have never had a tank before, but they are beautiful and relaxing, and I have my heart set on a less-expensive, "natural" tank that I could create from the back yard. I live in Florida, if that means anything! LOL! I feel embarrassed even asking these questions.....You all sound like scientists to me!