Very simple tank, had a 30 long for years, coral bandit, arrow crab, porcelain crab and a few peppermint shrimp. Keep your nitrates under 10, hand feed most of the time with stick pieces of silver sides, squid and when I was lazy I just squirted some mysis into tank and let them fend for themselves. Feed every three days, a little more for the coral bandit and arrow to keep them from fighting.