I traded a frag of xenia to a guy for a large piece of live rock. I've had it in the tank for a couple of weeks now and I jsut noticed an Aiptasia anemone on it. As much as i hated to do it, I took the rock out and washed it in hot water. Rather lose the live on the rock for now that have an explosion if Aiptasia. It was te only one i have seen and it is now gone. Is there a good chance this will stop the problem, or I am going to have a big issue now?