I have a 75 gallon tank and am have a very large amount of algae. I have an anenome and am planning on adding some other coral. I have a couple hermit crabs and am afraid of getting more because they seem to pick at my anenome. the gravel and rock have so much algae that it looks like grass waving back and forth. Is there anything or a type of fish or animal that can clean that stuff up? I dont want to clean it out when i do a water change but if I cant find a way to clean it up I am going to clean it my next water change cause it makes the tank look terrible.