I want to get more of that tonga rock too, I like the way it has branches. I have a serpent star fish, a mini brittle starfish that I saw for the first time last night ( hitchiked on a rock), 20 nass snails, 10 turbo snails, 15 blue legged hermit crab, 5 pepperment shrimp, and a couple emerald crabs. Both 55 gallon tanks have the same amount. More hitching posts, I have to get more imaginative there. I really like the maidens hair, will they hitch on that?