I know the photo is basically hot garbage, but its the best I can do for the moment. This algae has been a persistent pain in the rear and nothing in the tank seems to go after it, including: tangs, turbo's, trochus's, hermits, or my urchin. It appears to be more brown when viewed from outside the tank and it a bit slimy to the touch and has a firm foothold. I have ran both a Chemi clean and Reef flux treat on the tank with zero results. Any ideas?