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Discussion Starter · #1 ·
Hi there,

New to planted tanks - I've done some preliminary investigation but still at a loss for what this algae is, and the best way to treat it.

It's brown/filamentous, and seems to be multiplying rapidly in my high light/high CO2 tank (restarted from an old tank, so it could be anything).

Any ID ideas/suggestions would be greatly appreciated!


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