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algaehardFreshwater

Lyngbya

Lyngbya sp.

Family: Oscillatoriaceae

📍 Worldwide in warm freshwater and brackish water

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Dark, wiry filaments of cyanobacteria that form dense mats — often mistaken for BBA. Unlike true algae, it can fix atmospheric nitrogen, meaning low nitrogen levels do not suppress it. Produces toxins harmful to invertebrates. Requires the same treatment as blue-green algae: blackout, H₂O₂ treatment, and improved flow.

Keeping this species

role
nuisance — toxic
cause
warm temperatures, stagnant water, excess organics
control
3-day blackout, H₂O₂ spot-treatment, erythromycin in severe cases
warning
produces toxins — harmful to fish and invertebrates at high levels

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Natural Habitat Temperature

84°78°72°JFMAMJJASOND

72°F 84°F seasonal range  · (Jan low, Jul high)

Stats

Community tips0
Kept by0 hobbyists