Fungus or sponge?

[christinna77]

I found this about a month ago on one of my zoa frags. I removed the frag, dipped it in Revive, and scrubbed the rock clean. That seemed to work for around two weeks, but it's back now and spreading onto my other zoas, slowly covering the rock. What is this, and how do I get rid of it?

 

[TX_REEF]

looks like sponge to me. manual removal, or angels may eat it.

 

[christinna77]

looks like sponge to me. manual removal, or angels may eat it.

Thank you! It was actually pretty hard to scrub off the first time around, so I figured it might not be fungus. I run a high nutrient system and have had an explosion of pineapple sponges in my sump, so I guess this is just a different kind of sponge.

 

[Gumbies R Us]

Looks like a sponge to me!