Help with ID

[JCRove06]

What’s up Guys and Girls,

I noticed these things in my tank. I have a couple guesses as to what they might be but I figured I’d come to ask you all. I know people here have seen it all. If it’s bad what do I need to do to address it?

Thanks!

 

[MCloudy21]

Looks like a tube worm I have 1 in my tank. As 4 problem i don't know???

 

[JCRove06]

Looks like a tube worm I have 1 in my tank. As 4 problem i don't know???

You have 1? Would you like to give the poor fella some company?