Should I get a 10 (maybe a 12) gallon nano for christmas? I saw one at my lfs, I dont know if it is a 10, or 12. It is cool looking, and I may fet a hermit crab, a couple clownfish and an anemone, and some more coral. It is square shaped, so it is really cool.What fish could I ge? How big do yellow tangs get? I want one, but think they may get too big.. I dont know the first thing about saltwater nano. Or any saltwater at that..What equipment will I need? salt, filter, air pump?, coral, (how do you get the coral to stick to the glass, or wherever you put it)?, heater, any "only saltwater" equipment I dont know about? If so, how much do they run, and what do they do?Also, are the water changes the same? How do you put cycled saltwater back in an establsihed tank?Thanks, just remember I need to know EVERYTHING because I dont know ANYTHING!