Hi i set my tank up in December and noticed last week a few random small dots that appears to be coraline algae starting to.grow.on the dry rock i seeded in my tank.. is that normal for it to.show up that soon in a sw tank? Does that mean i.have great water quality or what does it mean? I hope it keeps growing and.turn my dry rock purple. Right now it is white with green and other random color algae growth on them from my lights.. any other facts about coraline algae? Im surprised i have it because i do not dose anything into my tank