Mar 6, 2014 #1 earlysteven Aquarium Advice Freak Joined Mar 6, 2014 Messages 411 I have this white stuff growing under my Fiji rock any idea any one?
Mar 6, 2014 #2 Moose72 Aquarium Advice Regular Joined Jul 21, 2011 Messages 57 Location OKC, OK My guess would be sponge.
Mar 6, 2014 #3 OP OP earlysteven Aquarium Advice Freak Joined Mar 6, 2014 Messages 411 Thank you for the guess