Jul 26, 2021 #1 M MyOtherCarIsAFishtank Active Member View Badges Joined Jun 5, 2014 Messages 189 Reaction score 131 Location Southeast Rating - 0% 0 0 0 What is this? It is encrusting slowly and is dark black with raised clear spikes. I haven't touched it so don't know if it is sharp.
What is this? It is encrusting slowly and is dark black with raised clear spikes. I haven't touched it so don't know if it is sharp.
Jul 26, 2021 #2 gentlefish Well-Known Member View Badges My Tank Thread Joined Oct 28, 2020 Messages 698 Reaction score 816 Location Ontario Rating - 0% 0 0 0 Hard to say in a plastic bag. I think it’s a black sponge. I had a similar one in a Duncan. I believe most people dislike for optics. I like all sponges as CUC.
Hard to say in a plastic bag. I think it’s a black sponge. I had a similar one in a Duncan. I believe most people dislike for optics. I like all sponges as CUC.
