I keep killing all of mine except for a couple of small patches. My wife loves it, so I can't eradicate it. I guess I have to admit, they look cool. But only under control...
Higor
We love the look of our pink pulsing xenia, but it does need to be fragged or trimmed once a month.
The only method for fragging it I've found is putting coral rubble on top of or next to a colony and letting it grow over, then removing the rock.