Hornwort (Ceratophyllum Demersum) is a popular aquarium plant with stems that reach lengths of 3–10 ft, with numerous side shoots making a single specimen appear big and bushy. Individual male and female flowers are produced on the same plant. The flowers are small, 2 mm long, with eight or more greenish-brown petals.
This species is often used as a floating freshwater plant in both cold water and tropical aquariums, though they will attach themselves to the substrate or any other solid objects in your tank or bowl.
Hornwort works well in bioBowls and nano tanks with a temperature range from 60F to 85F. It's easy to grow and maintain and does not require high levels of light.