OdinValknir Posted April 30 Share Posted April 30 I have asked in various local facebook groups and forums for an answer as well as many, many, many Google searches and cannot seem to find an answer outside of cyanobacteria. But it doesn't have any of the characteristics of cyanobacteria such as smell and so forth. One tank which is a more heavily planted 75 gallon. The algae on the glass and only on the glass is a bright red color and has to be scraped off. When I scrape it off it acts like green algae or any other algae on the glass and just clumps up and floats away. Another tank which is a still somewhat heavily planted 40 gallon breeder tank. I have some black rocks with white minerals in them. I forget the name of the rock. And this algae only seems to grow on the largest of these rocks and it's like a deep purple color. Any suggestions on what it is or help to get rid of it would be appreciated Link to comment Share on other sites More sharing options...
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