Bubble in Xenia

[kmatlock]

What is this bubble in the middle of my Xenia?

 

[blaxsun]

My guess would be some sort of sponge. Keep an eye on those suckers - they spread faster than the black plague...

 

[kmatlock]

Thank you for taking the time to reply! I will remove it.

 

[vetteguy53081]

Its clatharina sponge which is a type of poriferan sponge and can be invasive. Remove and discard. Best done outside of the tank