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Black Beard Algae
Audouinella sp.
Plantae›Rhodophyta›Florideophyceae›Acrochaetiaceae
📍 Worldwide in freshwater streams
Dense, dark grey-to-black tufts that cling stubbornly to plants, hardscape, and equipment. One of the most frustrating nuisance algaes for planted tank keepers. Caused by CO₂ fluctuation and low or inconsistent carbon dioxide levels. Spot-treat with liquid carbon (Excel) or hydrogen peroxide.
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Quick Facts
- role
- nuisance
- cause
- CO₂ fluctuation, low flow
- control
- stable CO₂, liquid carbon spot-treatment, Siamese Algae Eater