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Lemna Minor

Discussion in 'Plants Index' started by lljdma06, Mar 3, 2006.

  1. lljdma06

    lljdma06 Retired moderator :)
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    Location:
    Miami, FL
    Scientific name - Lemna minor

    Common terms - Duckweed

    Geographic origin - Worldwide distribution

    Type (stem, bulb, rhizome, floating, etc.) - floating

    Max. size (height, width) - leaves are 2-3mm long, fine roots can extend down 7+cm

    Lighting required - low-high

    Temperature - 10-30C

    Water chemistry requirements (pH, hardness) - unimportant, thrives in various conditions

    Growth rates - very fast

    Demands - undemanding, very easy to grow

    Additional info - Though often considered a pest in planted aquariums, Duckweed can actually be quite useful. It's long roots and fast growth make it a strong competitor with algae for tank nutrients. It can also be used to shade plants in the aquarium that require lower light levels (anubias, cryptocrynes, etc.). In addition, duckweed can provide a refuge and food source, via microscopic organisms, for young fry, and provide an anchor for bubble nesting species. If not regularly thinned, however, duckweed can cover the entire surface of an aquarium in a matter of days. Also, if starved for nutrients, the leaves turn white and the plant dies. Duckweed reproduces by division. Below are three photos featuring duckweed. The top photo is a close-up of the individual plants. The bottom photo on the left is of my betta tank 5 days after a small cluster of duckweed, about 10 plants, was introduced. The photo on the right demonstrates duckweed's useful function as a shade provider. Here is quite a large cluster shading my anubia in my 10g. You can see the extensive maze of roots formed by hundreds of tiny plants.


    Duckweed.jpg 10g_Feb_18th.jpg
     

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lemna minor for betta tank