Apr 13, 2014 #1 anthonygaliazzo Aquarium Advice Activist Joined Feb 21, 2014 Messages 174 Location Québec,Canada I noticed this strange white/beige stuff growing on my friends live rock. Anyone know what this is?
Apr 13, 2014 #2 coltonwsmith Aquarium Advice Regular Joined Feb 12, 2014 Messages 82 Location Texas Looks like a sponge.
Apr 14, 2014 #3 Dav3 Aquarium Advice Addict Joined Jul 22, 2012 Messages 1,233 Location California coltonwsmith said: Looks like a sponge. Click to expand... +1 sponge. Harmless filter feeder.
Apr 15, 2014 #4 OP OP anthonygaliazzo Aquarium Advice Activist Joined Feb 21, 2014 Messages 174 Location Québec,Canada Cool thanks!