I started a thread similar to this a few weeks ago, and the feedback that I got was that if you try it in a tank smaller than a 180, its inhumane, and if you try it in a 180-240 or so, you are going to be doing a lot of water changes to keep up with their waste production, and after that, things get a little easier. They never really become an "easy" fish to maintain(i.e., there's no way around weekly water changes and maintenance), but they are CERTAINLY worth a little extra work and money put into a good system.