If you want to. It's a Pom Pom Xenia, and it will spread like GSP and Pulsing Xenia.
Put rubble around it for it to spread onto so that it doesn't become a problem later on.
I'd like to have some. I had a frag of it, and I forgot to put it on the rocks. The pistol shrimp stole it within 3 minutes of it being in the tank.