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Green Water (Algae Bloom)
Chlorella / Euglenoids
Family: Various
📍 Worldwide in nutrient-rich freshwater
Pea-soup green tank water caused by a bloom of free-floating unicellular algae. Usually triggered by a combination of high nutrients and direct sunlight. A UV steriliser will clear it within days. A 3-day blackout is an alternative. Daphnia (water fleas) can be added to a fishless tank as biological control.
Keeping this species
- role
- nuisance
- cause
- direct sunlight, high nutrients, poor circulation
- control
- UV steriliser (fastest fix), 3-day blackout, Daphnia culture (fishless tanks)
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Tips from the community 💡
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