What are these brown things ?

[James M]

They only seem to be in this section of the tank .

 

[FartyParty]

My best guess is tube worms. If that is the case, they are filter feeders and are harmless. I’ve always liked them because they add a bit of movement to the rock surface.

 

[James M]

My best guess is tube worms. If that is the case, they are filter feeders and are harmless. I’ve always liked them because they add a bit of movement to the rock surface.

They get blown around and don’t have a hard tube .

 

[reef lover]

Do they move? Could be snail poo...

 

[James M]

Do they move? Could be snail poo...

They don’t move and didn’t even think about snail poop

 

[mainereefer]

Liver sponge

 

[James M]

Liver sponge

Thought liver sponges were much larger