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I updated my lighting system, using a Coralife strip light with 50/50 light bulbs. An algae boom was expected, but now I'm finding dark, burgandy colored algae. What is it and why all of a sudden did it come? Is it harmful? And will the Ottos eat it? I was always under the impression that red algae comes before green algae, and once you have green algae that means your tank is mature.