Can anyone tell me whether this green on my lava and lace rock is Java Moss or algae. I had Java Moss when I started the tank, but I took it out because it was turning my cichlid rocks an ugly green. I put Nutrafin Plant Gro in when I first planted the tank. Then I took the Java Moss out. MY other plants are growing great, but the alga/java moss is taking over. Is there anything I can do to contain it?