What is this algae??

[that guy]

The snails arent removing any of it. Tanks is about 6mo old.

 

[Dan_P]

The snails arent removing any of it. Tanks is about 6mo old.

Can you remove the rocks and scrub off this stuff?

 

[that guy]

The snails arent removing any of it. Tanks is about 6mo old.

Can you remove the rocks and scrub off this stuff?

Doesnt come off. Maybe its just in the pores of the rock.

 

[JonoH]

Looks like typical dry rock going green before Coraline grows.