Spirodela polyrrhiza (Tropica 1-2 Grow)

Spirodela polyrrhiza, commonly known as Greater Duckweed, is a versatile floating plant found on all continents except Antarctica. Its small, vibrant green leaves create a natural, floating carpet on the water surface, providing both aesthetic appeal and functional benefits. This plant is ideal for covering open water areas, absorbing excess nutrients, and offering shelter for shy or fry fish in freshwater aquariums

Appearance & Origin

Native to North America, Spirodela polyrrhiza typically reaches a height of 3 cm. It grows as a floating mat, often forming dense coverage with other duckweed species. Its tiny, rounded leaves give a soft, uniform green layer on the water surface, which can enhance the visual depth of your tank and provide a natural habitat for aquatic life.

How to Use in the Aquarium

This floating plant works perfectly to create surface cover in both cold-water and tropical aquariums. It helps absorb nutrients from the water, reducing algae growth while offering hiding spots for fish and invertebrates. Spread several plants evenly across the water surface, and thin out as needed to prevent complete shading of submerged plants beneath.

Maintenance

Spirodela polyrrhiza is an easy-to-maintain floating plant with a high growth rate. It prefers moderate light intensity but can tolerate low-light conditions. CO₂ supplementation is optional. Regular thinning helps prevent overcrowding and ensures healthy growth, while nutrient-rich water encourages vibrant coloration and rapid reproduction.

Summary

Spirodela polyrrhiza is a fast-growing, easy-care floating plant that provides natural cover, absorbs nutrients, and enhances the aesthetics of freshwater aquariums. Its adaptability to both tropical and cold-water tanks makes it an excellent choice for hobbyists seeking a functional and attractive floating plant.

Key Plant Growth Information