Jan 27, 2018 #1 C Cchamby Aquarium Advice Apprentice Joined Jan 8, 2012 Messages 28 Location SC What is this growing under my leather coral? Possible sponge?
Jan 27, 2018 #2 bribo12 Aquarium Advice Addict Joined Sep 19, 2013 Messages 9,729 Location Maryland Looks like a sponge to me
Jan 27, 2018 #3 OP OP C Cchamby Aquarium Advice Apprentice Joined Jan 8, 2012 Messages 28 Location SC Thanks. Is it harmful?