What are these?

[RIDGID]

Anyone know what these guys are?

 

[AlSimmons]

The first three pictures look like sponges of some sort. The last one is a Spirorbid worm. (all harmless)

 

[RIDGID]

They're growing in my refugium next to my skimmer

 

[mcgyvr]

yep.. sponges and spirorbid worms.. totally harmless and totally normal and beneficial

 

[RIDGID]

Thank you