What is this?

[Nate77]

Wife was looking in tank last night and saw this.
I can not find what it is

 

[haanstang]

It looks like a Bristle worm to me. But it’s hard to see on my phone. If it is then It’s beneficial to the reef to an extent. they eat leftovers, but don’t touch with your bare hands

 

[WV Reefer]

Wife was looking in tank last night and saw this.
I can not find what it is

Is it a hard tube? Or soft like a worm?

I have some tubes like that in my reef.... they are hard and have a “ridge” down the middle. Mine has a brown feather duster type worm that lives there. I always assumed they were some type of barnacle because they do not move quite like a feather duster when they go in and out.

 

[Reeferdood]

Vermetid worm, if it is alive I would kill it, they breed like crazy unless you want a tank that looks like Hermin Munsters house.

 

[Nate77]

Thanks all

It is hard and seems to be fused to the rock. Just let it go or try to break away from rock ?

 

[haanstang]

Thanks all

It is hard and seems to be fused to the rock. Just let it go or try to break away from rock ?

Then it’s a vermetid. They irritate corals and spread.

 

[Reeferdood]

I have heard of several methods like crushing them and Superglue. I use my laser to fry them, when I think they are bothering a coral.
Your rock looks fairly new so it might just be an empty shell....

 

[WV Reefer]

Thanks all

It is hard and seems to be fused to the rock. Just let it go or try to break away from rock ?

I would wait and see. It does not look like a vermetid snail to me..... their tubes are round and coiled.

My dry Pukani rock had several of these from days gone by as nothing actually lived in the tubes. Wait and see if anything comes out of it.... if not I would forget about it.

 

[Nate77]

Then it’s a vermetid. They irritate corals and spread.

Is there a way to get it off ? seems almost as part of the rock

 

[WV Reefer]

Is there a way to get it off ? seems almost as part of the rock

If you can’t easily crush it, it is not a vermetid snail.

 

[Reeferdood]

Its shell is calcium so you can scrape it off...

 

[Nate77]

Cool yes rock is fairly new I will let alone for now

 

[Maritimer]

Since the rock is new and all, I would guess it's most likely the shell of either a vermetid (actually a snail) or a calcium-tube feather duster that once lived there - but is now long gone.

~Bruce