I actually am not sure it is bryopsis. That is what I thought (there is more of it up top on some of the rocks). I bought a gallon of Kent M and some Mg test to go to war but since adding a dual reactor with GFO & Carbon it has been dying off. So I am really hoping it isn't but am prepared if it is.
I think I need to find a new home for that carnation, I didn't realize what it was or the care required. Wish the person I got it from would have given me a heads up.