My tank is about 3 months old now and i am starting to get coralline algea growth on about 60% of my rocks but there are 2 rocks that i am concerned about that have this dark brown almost black algea growing on it almost looks like a blanket on the rocks in a few spots and it really is an eye sore and i would like to know if there is anything i can do about it?
This growth is on the rock in the picture and on one smaller rock on the other side of the tank, everything else is starting to grow coralline


This growth is on the rock in the picture and on one smaller rock on the other side of the tank, everything else is starting to grow coralline