I have a 200gal tank with a 16 inch. female nurse shark. She eaten almost all of her tank mates which include a engineer goby, Niger Triger, a few clowns, and as of last night my wifes Domino Damsel. The tank is looking kind of bare so wanting to put some new fish into it but not sure what I can put into the tank. As of right now the tank has two moray eels which she hasn't try to eat, and a star fish. We are also looking into getting her a custom tank being made. However my wife has been wanting to make a quarter of the tank a coral reef. Which as of right now we do have a few live rocks to protect the Eels. So I my question is would I be able to make a quarter of the tank reef and what can I put into the tank that the shark won't it. Now I know I cant put any anemone in the tank cause of the eels getting stung. Also I have been haveing a Alge problem I was told I could put a Tang in the tank I just not sure what type. Thanks for the help.