I have a 60g tank. It has a few Fish in namely bangii cardinals, white goby, red anthias, peppermint shrimp and a few blue legged hermits. I'm going to add a few clownfish and maybe a drawf angel over the next few months and in 6 months or so an anemone and a mandarine. I have a pair of 5400 wave makers, and use a sump system so the flow is fairly good. I only have 4 t5 lights 2 blue and 2 white but will upgrade eventually to LED, but not for 6 months. I want to put some colour and activity in the tank so was looking and some corals. Would like 4 or 5 but will only grow 6inches or so. What are good starter corals and the look and will add good character in the tank. Thanks