Common duckweed
Lemna minor
Common duckweed (Lemna minor) is a small floating freshwater plant, very widespread and ideal for beginners. It grows extremely fast and absorbs nitrates and phosphates, which helps to limit algae.
Parameters
- Water type
- Freshwater
- Temperature
- 15–28 °C
- pH
- 6–8
- Adult size
- 0.5 cm
- Difficulty
- débutant
Environment
A surface floating plant, requiring no substrate. It tolerates a wide range of temperatures (15–28 °C) and pH (6.0–8.0). Moderate to strong light is enough. Caution: it can cover the entire surface and reduce the light reaching the plants below — remove the excess regularly.
Feeding
It feeds on dissolved nutrients (nitrates, phosphates). Many fish (goldfish, cichlids, some characins) and invertebrates enjoy it as a plant-based supplement.
Tips & tankmates
An excellent refuge plant for fry and shrimp. Very fast growth: plan to skim it off regularly. Ideal for shading a betta tank. Never release it into the wild. Note: Lemna minor is a native species in Europe and is not banned, unlike some invasive exotic floating plants.
Sources
- FloraAquatic
- Aquaplante — fiches plantes
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Information provided for guidance only; it may vary between individuals and conditions. If in doubt about an animal's health, consult a vet.