I am just starting to add coral into my 90 gallon, Yesterday I bought just a few frags of Zoa's and two frags of Xenia. As I am doing some research on the Xenia it appears that a lot of reefers consider this coral a pest as they can take over a tank. I wanted to get some opinions on what to do with it. I am thinking about putting it on its own rock and place it on the sand away from the rest of my rock structure so it wont spread.