mr. limpid Active Member Mar 7, 2013 #2 I have the same stuff growing on my rocks. I know its not a sponge or and algae, because my butterflies or tangs would of ate it. I think some kind of worm.
I have the same stuff growing on my rocks. I know its not a sponge or and algae, because my butterflies or tangs would of ate it. I think some kind of worm.
