Thanks all, I wanna pick you brains alittle though, lol .. . I want to add more rock but I dont want it to look like a wall of rock.. So in this store in Madison there display tank has like a Tree effect for the rock work..... OK dont ask me how,,, But it has branches and the rock/branches are thick enough to put corals on. They somehow glue/screwed tonga rock together. I want to try to have that effect on both sides of the tank going towards the middle of the tank... Any ideas?