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Duckweed (Lemna Minor)

$7.25 - $34.95
(62 reviews) Write a Review

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Duckweed (Lemna Minor)

Lemna Minor, also known as duckweed aquatic plant, is a fast-growing, adaptable, hardy, and easy-going plant. Duckweed produces small and oval leaves measuring about 0.12 inches and we ship it in a 4 oz container or by pound. The light green leaves enhance the look of your tank as this clover-like botanical floats along your open-top aquarium. These floating pants produce root like structures that hang underneath the leaves.

In good conditions, you can expect your duckweed aquatic plant to spread quickly — a small amount can cover the surface of an average aquarium in one week. Each floating leaf, through the process called vegetative reproduction, will produce more floating leaves. Because of its fast growth, duckweed is great for all types of aquariums, especially those with a heavy biological load. The plant will absorb any excess nutrients from the water column to help keep your tank free of algae.

Many fish, and particularly Koi and goldfish, love to eat duckweed and others will appreciate the shade and cover it provides, making them feel secure.

Maintenance & Care for Duckweed Aquatic Plants

Your duckweed floating plant should be regularly thinned to remove excess material. Balance out the look of this plant with other floating plants like water lettuce or dwarf baby tears.

  • Minimum Lighting Required: Low to Moderate
  • Temperature Range: 41°F - 95°F
  • Tank Placement: Floating

Due to the large temperature range in which duckweed aquatic plants thrive, you can use it in tanks with varied water conditions.

Plants From Modern Aquarium

Every image of our live aquarium plants on our site is a true representation of the plant grown in our nurseries and of the highest quality we can provide. Our plants are sourced from the best Florida nurseries and we always have a large selection of plants available for quick shipping to you. Get free shipping when you spend $50+ on Java Moss today and complete your aquarium’s aquascape with our driftwood or aquascaping rocks.

Reviews (62)

  • 5
    The best

    Posted by Hali on 30 May 2022

    I’ve purchased this many times. My goldfish cannot get enough of it. I love that I can order so much of it at a time

  • 5

    Posted by Ralph on 24 May 2022

    Bought two 4 oz cups for a couple breeder tanks. i was surprised by the amount received. Both containers were filled with plants just as in the photo. i've had the duckweed a few weeks now, and it's made its way into all of my aquariums. This stuff seriously multiplies on a daily. This stuff is amazing at keep nitrite levels low. I'm harvesting the excess and using in the goldfish and koi ponds.

  • 5

    Posted by William Roden on 25 Mar 2022

    I ordered a pound of this and actually received a pound of plants, not water but actual duckweed. To make things even better it was very well packaged and healthy. I will definitely be buying from these guys again!

  • 5

    Posted by Richard velluzzi on 4 Feb 2022

    Adds a nice layer to the top of the tank to prevent algae growth.

  • 5
    Good Price + Fast Arrival

    Posted by natalie duncan on 1 Feb 2022

    I love duckweed for feeding to my goldfish. They love it! I also love how much bulk you can buy from these guys. Some places will send you these pathetic tiny little bags of nothing that last about a second around my fancies. Not modern aquarium though! Thanks for yet another amazing plant, guys!

  • 5
    Duck Weed (Lemna Minor

    Posted by John Hess on 24 Jan 2022

    I have added this to my Guppy/Neon Tetra tank, and they "Love It" ... They even appear to be eating it :-)

  • 5
    Quality weed and my turtles love it

    Posted by Ronald Beiswanger on 12 Jan 2022

    Quality weed. Arrived alive and well

  • 5

    Posted by Haley W on 20 Dec 2021

    I found out about duckweed a while ago and wanted to give it a try. I bought this and their was no snails! I had an algae issue going on and this actually fixed it tbh! It’s growing super fast and it looks so good in my tank! I have a 10 gallon fish tank with 10 glow fish, 3 tiny catfish, and a snail! I recommend getting this duckweed. Totally worth it! And it came in a small container but I got a lot for my money! I had to give half of it away because the other half covered my entire tank haha!

  • 5
    Great Quality!!

    Posted by Amanda Fogerson on 14 Dec 2021

    Fast shipping and great quality plants

  • 3

    Posted by SUSAN EDWARDS on 13 Dec 2021

    50% DIDN'T MAKE IT

  • 5

    Posted by Larry on 8 Dec 2021

    This is the first time buying products from Modern Aquarium. The experience was great. The plants were shipped quickly and arrived in great condition despite being in transit a day longer than expected (no fault of Modern Aquarium, FedEx had a delay). I will definitely buy more plant from them when setting up my next aquarium.

  • 5

    Posted by Benjamin Lilly on 6 Dec 2021


Trust in Modern Aquarium

At Modern Aquarium, we guarantee the quality of our plants and our products. Any images you see on our site are of the plants that were grown in a plant nursery where they are grown and cultivated. If you have any questions about integrating your new plants into your tank, reach out to our team for assistance!