Humuhumununu
Reefing newb
I have had a sustainable environment in a 135 gallon aquarium for about a month now, and today when I was making my regular observations, I noticed some black spots on the rocks. Now I have completed my cycle, the hermit crabs, snails, and Foxface are doing a good job eating the algae, and some of my hermit crabs have purple shells ( which I have always asssumed to be Coraline Algae). So my question to you guys is are these black spots the beginnings of Coraline Algae?