I am new to keeping Cabbage coral
I am new to keeping Cabbage coral and i have not found a lot of info on the net. My coral has been fine previously. I couple heads have rescently started turning purple when everything was a rusty orange / brown color. The water quality has been fine. Anyone ever seen this, is this normal or should i be concerned ? Some heads are turning purple, some not. Even on healthy specimines, they are starting to get purple spots in some places.