Id Please

[Fizbang]

Just starting to get my first signs of life on my previously dry rock. Someone Id'd this as Hydroids, however after looking a several pics of hydroids I'm not sure. The Hydroids look to have a stem with a kind of head with tentacles, these seem to be more of a stem with branches coming out all along. Any ideas?

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[Sugar Magnolia]

Hydroids.

 

[homer1475]

hydroids.

+1

 

[Fizbang]

Should I try to get rid of them then before they spread?

 

[Sugar Magnolia]

Yes, I'd suggest putting some reef compatible epoxy over them.