Any ideas as to what these are?

[Nate92]

I've noticed them spreading around my tank the last two weeks... any help identifying would be much appreciated! Thank you!

-Nate

 

[Lovemyreef2015]

They are a type of colonial tunicate. Good filter feeders.

 

[C. Eymann]

+1

 

[Nate92]

They are a type of colonial tunicate. Good filter feeders.

Excellent! Thanks for your response! Glad to know they're good for the tank rather than bad!