Nov 12, 2011 #1 Marcusa Aquarium Advice Apprentice Joined Apr 24, 2011 Messages 37 This started out as a nub about 6 months ago. Marcus Attachments image-3858098795.jpg 53.6 KB · Views: 69
Nov 12, 2011 #2 kay-bee19 Aquarium Advice FINatic Joined Feb 5, 2006 Messages 801 Location Tampa, FL Looks like branching hydnophora.