What the heck are these?

[bif24701]

Some kind of tiny bright green polyp is popping up all over this rock. Any ideas?

 

[OCD Reefer]

Looks like feather dusters.

 

[OCD Reefer]

Good filter feeder.

 

[bif24701]

Looks like feather dusters.

Bright green feather dusters!? That's awesome!

 

[salttanklife]

Looks a little like one I have in my tank. I asked the other day and really didn't get a definite answer. I'm following along to see if someone can help

 

[mcarroll]

Looks like button polyps to me. Is the photos misleading me and the tentacles on them really look feathery?

Search the forum or wherever for "button polyps" or "nuclear reactor button polyps".

They're good active feeders, but might be considered a pest. Depends on what you like.

 

[Lionfish Lair]

I would guess hydroids.

 

[saltyfilmfolks]

I would guess hydroids.

Yes. I think so too. The probably glow under the blues?

Little stinging pests.

 

[Scubabum]

Look like Colonial Hydroids. Get them out before they take over your tank. I just fought a 2 year battle with them.