caulerpa
Not sure what kind. Talked to a lady that said it really ate up nutrients that made hair algae grow. I have tred everything to get rid of the hair algae, 170 hermit crabs, large snails, water changes, using a turky baster to get stuff off the rocks that make it grow, took all the rock out and scrubed with metal brush, roots must be deep in the rock cause it didnt work. Im thinking about a sea hare next, any suggestions?