What is this white stuff on my liverock?!

[Squidward]

Can anyone tell me what this white stuff is? I tried looking through the search button but couldn't really find what it is. Even tried Google. And how do you get rid of it? It's only appearing on more of the bottom side of the rocks.

 

[MichaelReefer]

Sponge.

 

[Squidward]

Sponge.

Sponge doesn't sway in the flow.

 

[Squidward]

Dang no one? I guess I'll post on facebook groups.

 

[JGT]

Could be hydroids. Hard to see.

 

[mehaffydr]

Can anyone tell me what this white stuff is? I tried looking through the search button but couldn't really find what it is. Even tried Google. And how do you get rid of it? It's only appearing on more of the bottom side of the rocks.

I have no idea on the white stuff but must say I saw a very cool assortment of fish in that video.

 

[Squidward]

Friday morning bump. Anyone?

 

[CMMorgan]

Can anyone tell me what this white stuff is? I tried looking through the search button but couldn't really find what it is. Even tried Google. And how do you get rid of it? It's only appearing on more of the bottom side of the rocks.

I am curious if you have put it under a microscope. Something that looks white under reef lights may actually be green. If so, it's most likely a type of hair algae. If it actually is white then this is my best guess ...

https://reeftankresource.com/digitate-hydroids-good-or-bad/