Jan 24, 2022 #1 tang559 Community Member View Badges Joined Jan 24, 2022 Messages 80 Reaction score 29 Location California Rating - 0% 0 0 0 Hello, what is this on my rock? It dont come off easy. Fowlr tank. About 4 months old. Help or info is appreciated thank you. Last edited: Jan 24, 2022
Hello, what is this on my rock? It dont come off easy. Fowlr tank. About 4 months old. Help or info is appreciated thank you.
Jan 25, 2022 #2 Sean Clark 7500 Club Member View Badges Hospitality Award Midwest Reefer West Michigan Marine Aquarium Society My Tank Thread Joined May 16, 2019 Messages 8,055 Reaction score 31,606 Location Michigan Rating - 0% 0 0 0 Since it does not come off easily then it is most likely coralline algae. Upvote 0
