my finace is a high school teacher, she had a 1 gallon tank with a crab and a betta in it this year. she would like to buy a nano cube and take it with her to school this next year. it works out pretty good, she plays learning games and the winner gets to feed the fish for the day, the even like to clean the tank for her. i would like to keep the tank really interesting with maybe 2-3 small fish, a few shrimp and some corals. i myself have just gotten started into corals and dont have a very big database of whats easy and whats not. so with the lights that come on the nano can anyone tell me a couple hardy, nice looking corals for a beginner. i still have a couple months before i need to get started on this. i just would like some names of stuff so i can find a pic to show her. all help would be appreciated!