Hi, I would like to check with Bro here whether is this brown algae? Is it due to lighting? How to get rid of the algae? My fish and coral is doing well...is just that the rock and tank wall of my nano tank got this algae. Please advise how to get rid of it. Is this brown algae or diatom? Thanks. My current lighting I am using is maxspect nano razor. Thanks Sent from Singapore Reef Club mobile app