I have a 29 biocube. 30lbs rock. I have 2 clowns, damsel and a dottyback. Im close to max yes. I just started adding coral. Think i can do 1 or maybe 2 more fish. Any suggestions? I found a http://www.liveaquaria.com/product/prod_display.cfm?c=15+21+47&pcatid=47. Not sure if one of these would be good?