Well, a couple powerheads with a total flow of about 300-400gph try Maxi-Jet, a filter would work, just not as good. a 50w Heater, thermometer 10-15lbs of dry aragonite sand (skip the "live" stuff, waste of money), a bag of salt (Instant Ocean is not a bad place to start), a test kit with pH, ammonia, nitrate, and nitrite, and a few buckets to mix water in and do water changes with. I may be missing something, but this pretty much covers most of it. A single tube cheap flouescent light that comes with most tanks is fine by the way.