I would take the rocks out and boil them really good then put them back in the tank. Of course I would be afraid of what the stuff is and if it will reak havoc on your tank later on.
I was at my LFS today and I asked the guy about the "fungus" and he said I should take the rocks out and soak them in bleach. Can I do that and then put them back in the tank (after thoroughly rinsing them in some fresh water obviously)?
