No pics. But algae hmm how to explain..
its good, most of it. It shows you have a healthy thank. it has to grow somewhere which is why people to it in the Refug.... the best thing you can do is scrape it off the glass every ouple days... then get a larger CUC.... or maby some algae eating fish... i would say a Flame angel would be nice.. just watch to make sure he has enough algae... maby put a rock wrapped with nori and rubberbanded... down on the bottem... or a lawnmower blenny (dont really know about this just heard about it)