What is this help

Discussion in 'Algae' started by Bmoremillz, Aug 20, 2020.

  1. Bmoremillz


    Aug 20, 2020
    Likes Received:
    Hello so I’m new to this and my live rocks have a brown/gold stuff on them that was not there before I turned my lights on can anybody tell me what this is and how to get rid of it I have been cleaning it off the glass but I can’t get it off the rocks image.jpg
    Bmoremillz, Aug 20, 2020
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