ID Needed

[jethro710]

Hey reefers
I've got these things popping up and they are starting to spread. Not sure what they are. AI tells me they are either sponges or tunicates. I'm not sure, but they are exploding. I've got a 13.5 gallon. The only thing new recently is a bubble time anemone.
Anyone have any thoughts? If so, are they good, bad, indifferent? Should I keep or try and remove?
Thanks in advance!

 

[EnterName]

If it spreads fast it can't be good.

If those are sponges you can't really do much besides nuking the rock. Sponges have absolutely insane regenerative abilities and scraping them off will just spread them more and even the tiniest residues will fully regrow into a new sponge.

Can you see any holes or tubes? This might help with the identification because the image quality is limited.

 

[Mickle]

Looks very familiar but I cant place it.
Maybe a Lobophora species but that doesnt feel right to me

 

[PolypPocket]

Looks very familiar but I cant place it.
Maybe a Lobophora species but that doesnt feel right to me

This sounds really plausible, like maybe Lobophora variegata. Even though it’s a “brown” macro algae it comes in orange too