little fish
Member
I have what I thought was dark pink/maroonish coraline algae, but now I am not sure after reading some other posts. It is growing all over the rocks and sand. Is this coraline algae or cynobacteria? Does coraline algae grow on the sand? It sure is pretty, whatever it is. My water conditions are great except for calcium has been somewhat high between 500 -550. Any help would be appreciated! Thanks!!!