What are these clear tube like things?

christwendt · Nov 28, 2020

I’ve noticed bunches of these show up. Any idea?

brmreefer · Nov 28, 2020

Looks like a type of sponge.

Morbo · Nov 28, 2020

Looks like some type of sponge to me. If so, harmless filter feeder.

christwendt · Nov 28, 2020

brmreefer said:
Looks like a type of sponge.

Thank you

christwendt · Nov 28, 2020

Morbo said:
Looks like some type of sponge to me. If so, harmless filter feeder.

Thank you

ReefBridge · Nov 30, 2020

+1 on sponge. Saw two other posts asking about these. General consensus is they’re good.

Creating a strong bulwark: Did you consider floor support for your reef tank?