I have some red algae growing on a photosynthetic gorgonian I have in my tank. The currents in the water are causing the algae to spread a bit - it's very manageable right now - I want to know how I should handle this? I have a peppermint shrimp which seems to eat on the algae when it gets substantive, but I want to avoid if at all possible, a large-scale outbreak of this stuff. Does anyone have any ideas?