can anyone tell me how to rid of this problem. ive been manually removing it but it seems to come back in its original spot and spread to another. is there any live stock that would eat it because my algae blenny doesnt touch it. i have a 9watt uv light to help contain it but it reappears. i want to get rid of it before it becomes a major problem. i have about 6 small spot that its growing on.