Peppermint Shrimp are suppose to eat Aptasia as well. If you don't have anything in your tank that will eat them, I would say get a few. If you don't want to take the rock out. I bought two, but they never ate it. So it's a hit or miss with them. My Puffer took care of the lazy shrimp. :-p
Fish Sticks, the best thing you can do with your dead fish.