doktorstick Posted January 17, 2010 Share Posted January 17, 2010 Howdy. I have these small, black spots slowly appearing on my live rock. It is mainly on the flat side of a rock close to the lights, but I'm starting to see some a little further down. If I'm not mistaken, during the actinics I see what appears to be peach-fuzz-like on the black spots. Here's a very crude picture taken top-down with a shaky iPhone through surface agitation. Thanks! Quote Link to comment Share on other sites More sharing options...
Rgwiz11 Posted January 17, 2010 Share Posted January 17, 2010 I've heard of "Black Spot" Algae (I believe it's actually a type of Red Algae), but last I heard it only grew on plants and not rocks. Quote Link to comment Share on other sites More sharing options...
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