AHHHHHH corals arent just some pretty decorations,, they are LIVING creatures....SO you want some corals... do you have a particular type.. Small Polyp Stonys, Large Polyp Stonys, Soft corals?? and theres more.. If you are truelly thinking about getting into them and have had good husbandry with your SWF tank so far then invest in Julian Sprungs CORALS book.. its a great intro he also has coral journals (though I dont have those so cant tell ya much about them)