6 or so adult fish, bare bottom tank, just them. This is the easiest thing for you to do being your first time keeping discus. Read up about them, DO NOT buy from your LFS. Discus are one of those fish that if you do not get them from good sources, you will not end up with good healthy fish. Save up the money, buy some nice fish and pay for the shipping, it will be well worth it in the long run. Read the article in my signature. If ya have questions ask, let me know also where you live, there may be a good breeder/importer in your area I can refer you too.