- I've got a Colorado Starburst that didn't move an inch for 6 months. All of sudden, it's moving all over the tank and stinging everything in it's path. Right now, it's on small rock that I can remove, but I'd rather figure out a way to keep it in my tank. I was thinking of creating a small island with the rock and have it be separated from the rest of the rockwork by the sandbed. My question is this...would the anemone be more likely to stay put if it's on a small island or could it move across the sandbed back to the main rockwork?


