Anthelia or Clavularia?

[Shadowsfold]

I am unsure which type of coral this is. I bought a used tank that has a bunch of this in it.

 

[jonbar1]

Anthelia

 

[Poseidon]

Anthelia. Keep an eye on it, that stuff spreads like the plague!

 

[Shadowsfold]

Thanks for the replies! That stuff is crazy though, I've had my tank running almost a month now and it has already grown a lot. I've got some Kenya Tree also, so I'm going to have fun with population control.