What is this brown algae?

[Kabong]

I don't know if they will eat it but some Nassarius snails will help by moving the sand bed a bit.
Scarlet hermit's are allways cleaning the sand so some of those may help as well.
Cerith snails may work as well, But im not a big fan of them.
They allways seem to end up on there backs.

[MikeP]

Thanks for the help everybody.