Duckweed portion

  • Floating plant
  • Easy to care for
  • For aquariums and ponds
Article no: ZR13615

CHF 5.00

Stock: 0

Ready for dispatch in 1-3 days, delivery time 14 working days

Delivery between Tuesday, 13 October and Wednesday, 14 October
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Product information "Duckweed portion"

Duckweed / Duckweed Portion

Duckweed (Lemna minor L)

  • Floating plant
  • suitable for the aquarium
  • also suitable for garden ponds and biotopes


Duckweed – a natural floating plant for aquariums, ponds and feed production

Duckweed, also known as water lettuce, is a hardy, fast-growing floating plant suitable for freshwater aquariums, ponds and small rearing tanks. The small, green plants float freely on the water’s surface, reproduce very rapidly under favourable conditions and offer numerous benefits: They remove excess nutrients from the water, provide shade, improve the natural balance and are readily eaten by shrimp, snails, goldfish, ducks and other animals.

Breeding and propagation

Cultivating duckweed is very simple. The plants are placed directly on the water’s surface and require no planting, no substrate and no CO₂ system. With sufficient light, calm water and enough nutrients, they reproduce by division. Under good conditions, the population can increase significantly within a few days. A small container, a nano-aquarium or a plastic tub is sufficient for targeted cultivation. We recommend at least 5 to 10 litres of water, for a more stable and productive culture 20 litres or more. The water should be as still as possible, as duckweed does not tolerate strong currents, splashing water or leaves that are permanently submerged.

Optimal conditions

Duckweed is highly adaptable and grows reliably in many freshwater environments. An ideal water temperature of around 18 to 28 °C. Temperatures of approximately 10 to 30 °C are generally tolerated, though growth slows significantly in cooler conditions. The water should be nutrient-rich, for example through the presence of fish, prawns, snails or very sparing use of liquid fertiliser. A pH value in the slightly acidic to slightly alkaline range is suitable; approximately 5.5 to 8.0 is not a problem for most cultures. Water hardness usually plays only a minor role. Above all, sufficient light and a calm water surface are important. A lighting duration of around 8 to 12 hours a day promotes vigorous, green growth.

Care instructions

Since duckweed grows very quickly, the population should be thinned out regularly. A completely closed plant canopy can block too much light from reaching other aquarium plants and restrict gas exchange at the water’s surface. You should therefore remove some of the plants using a fine-mesh net or spoon if necessary. To maintain a healthy culture, it is advisable to carry out partial water changes regularly and to remove dead or yellowing plants. In aquariums with strong surface movement, a filter outlet directly at the water’s surface or very nutrient-poor water, growth may be slower.

Benefits at a glance

  • Duckweed is easy to care for, fast-growing and versatile.
  • They help break down nutrients, provide shelter for young fish, naturally shade the aquarium and are ideal as a supplementary food for many aquatic animals.
  • This makes them ideal for aquarists, pond owners and anyone wishing to create a simple, natural plant culture.
  • The delivery consists of a starter batch of live duckweed for further propagation.
  • Please note: Duckweed can spread very rapidly and should not be released into natural water bodies.
Aquarium: Community aquarium, Landscape/Aquascaping, Nano aquarium
Genus: Mosses diverse
Growth: fast
Origin: Worldwide
Properties: Floating plants
Composition
Feeding recommendation
Technical details
Size information

17 of 17 reviews

4.32 out of 5 stars


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5 July 2026 12:36

Les lentilles d’eau sont une bonne chose, le prix était correct

Il nous manquait des instructions pour bien faire grandir les lentilles, elles ont été un échec, malheureusement. Exemple: Grandeur du contenant nécessaire, quantité d’eau (profondeur), faut-il parfois donner de l’engrais, température , etc.

Our feedback: Merci beaucoup pour vos commentaires. Nous ajouterons volontiers ces informations à la fiche produit.

10 December 2025 11:59

Nicht so gut

sachez plastique simplement fermer par un noeud, lentilles d’eau éparpillées partout sur le sachet, certaines étaient donc asséchées.

29 August 2025 18:04

Ingenious against algae!

We added duckweed to our pond because of heavy algae growth. The water soon became clear and the proliferation of algae was greatly reduced. The effect was amazing!

6 July 2025 17:33

Complete satisfaction with order and delivery.thank you

Thank you.order,delivery and payment top.

31 July 2023 11:19

Always happy to return

everything tip top

24 April 2023 10:15

much too small

Prompt delivery.everything was tiptop only the duckweed quite small,wanted them for the garden pond,you can hardly see them

13 October 2021 19:14

The product is very good. The price-performance ratio is very good.

The duckweed was very good. The Triops Longicaudatus nibbled on them from time to time.

30 September 2021 08:48

It is very good.

My Triops longicaudatus likes to nibble on it.

11 May 2021 20:00

good quality and delivery went well

good quality and delivery also went well

25 March 2021 20:43

Gladly again

Everything is fine, well packaged and looks good in the tank.

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