Lemna minor, also commonly known as duckweed, as an easily adaptable, fast and easy-growing plant. It is a floating plant that produces a root-like structure that hangs underneath. 

Due to its fast growth, its great for tanks with a heavy bio load. Its also great for ponds! 

Common Name: Duckweed
Family Name: Lemnaceae
Native To: Worldwide
Lighting: Medium
Growth Demands: Easy
Growth Form: Surface
Growth Rate: Very Fast
True Aquatic: Yes
Placement in Tank: Surface
Available As: Bareroot