My tank is three months old. The vast majority of my rock has some brownish hair algae on it and looks like this:
However, one small rock that happens to play host to my Riccordia looks like this:
The white encrustation seems to be fending off the nuisance algae. Any idea what it it???
However, one small rock that happens to play host to my Riccordia looks like this:
The white encrustation seems to be fending off the nuisance algae. Any idea what it it???

