Feb 3, 2018 #1 AZG Active Member View Badges Joined Jun 2, 2017 Messages 163 Reaction score 185 Location Boston, MA Rating - 0% 0 0 0 The white string things on the rock. I was thinking tunicates but not sure.
Feb 3, 2018 #2 kschweer Moderator View Badges Staff member Super Moderator Partner Member 2024 Excellence Award NJRC Member Hospitality Award My Tank Thread My Aquarium Showcase Joined Mar 25, 2011 Messages 12,226 Reaction score 31,529 Location New Jersey Rating - 0% 0 0 0 Looks to me like a sponge of some sorts.
Feb 3, 2018 #3 ReefQueen Amphiprion Admirer View Badges Excellence Award 3RMAS Member Reef Squad Emeritus Joined Jan 1, 2016 Messages 2,116 Reaction score 3,140 Location Pittsburgh Rating - 0% 0 0 0 I agree on sponge, I have that kind in my sump.
Feb 3, 2018 #4 sfin52 So many pedestrians so little time View Badges Excellence Award Hospitality Award Midwest Reefer My Tank Thread Joined Jun 19, 2016 Messages 24,079 Reaction score 101,817 Location Usa Rating - 0% 0 0 0 Sponges