Feb 23, 2018 #2 coralbandit Aquarium Advice Addict Joined Apr 16, 2015 Messages 6,943 Location Saratoga,NY Looks close to a pineapple sponge . Hard to say. Is the rock new? This is a short thread on a similar sponge ? https://www.google.com/url?sa=i&rct...aw0QYK8Q3bZXBkV_FHmsJuM3&ust=1519521060213132
Looks close to a pineapple sponge . Hard to say. Is the rock new? This is a short thread on a similar sponge ? https://www.google.com/url?sa=i&rct...aw0QYK8Q3bZXBkV_FHmsJuM3&ust=1519521060213132
Feb 23, 2018 #3 bribo12 Aquarium Advice Addict Joined Sep 19, 2013 Messages 9,729 Location Maryland Definitely some sort of sponge. Beneficial guy.