Please ID

[Slims]

Hi. Found this in the gravel of my display tank. Can someone please help ID. THANKS

 

[TaahirS]

Looks like dead sps colonies.
Is it alive?
Hard or soft?

 

[Ricky W]

It's worm tubes don't know what else to call it.

 

[Slims]

Its dead. Very brittle. Has gravel attached on the outside.

 

[Ricky W]

Ja it's worms

 

[RiaanP]

you had worms, wonderful worms...

 

[Slims]

is this bad?

 

[RiaanP]

guys struggle to get their DSB seeded with worms etc. This is what you want!

 

[Slims]

Cool thanks

 

[Nemo84]

My tank has them ? Feather duster worms come out some of them