Crazy things coming from my rock.

[Fieryfrog]

I have no idea what these are. They started appearing a few days ago. They don't retract when touched and they seem soft and easily torn off.

Does anyone know what it is?

 

[saltyfilmfolks]

Those are neat! Im betting Sponges. Ive seen similar, but usually white.

 

[Wilsoni]

+1 for sponges

 

[atoll]

Yes sponge I have some in my tank.

 

[Alucard]

Those are cool, wish I had some in my tank!

 

[ScottMyers123]

Very cool. Most are white from what I have seen.

 

[mrcoffee2]

When I started carbon dosing they started appearing everywhere.