Hornwort (Ceratophyllum demersum) Great for outdoor ponds, water features, and even freshwater aquariums (1lb) This is a great pond water purifier that will float at the top of the water This plant is low maintenance, low light, and very hands free in terms of care Our hornwort is grown in our greenhouses right here in central Florida Offers shade and refuge for pond fish if they are in direct light Should reproduce quickly and spread