Spirodela polyrrhiza ( Duckweed )

Spirodela polyrrhiza, commonly known as Greater Duckweed, is a versatile floating plant that adds a natural, dynamic element to aquariums. Its small, round, green fronds float freely on the water's surface, creating a serene, pond-like appearance. This plant is ideal for providing shade and shelter for fish, reducing light penetration, and helping to control algae growth.

Thriving in low to moderate lighting, Spirodela polyrrhiza is easy to care for and grows rapidly, making it suitable for both beginners and experienced aquarists. Its fast growth rate aids in nutrient absorption, contributing to improved water quality. Regular thinning is recommended to prevent excessive coverage and ensure balanced light distribution to submerged plants.

Key Benefits

Natural Shade: Offers shelter and reduces light for fish.
Algae Control: Competes for nutrients, limiting algae growth.
Water Quality Improvement: Absorbs excess nutrients efficiently.

Spirodela polyrrhiza is an excellent choice for aquarists seeking a low-maintenance, functional plant that enhances the natural aesthetics and health of their aquarium ecosystem. 

Plant info

Origin:	North America
Country or continent where a plant is the most common. Cultivars arise or are bred in cultivation.
Growth rate:
Growth rate of the plant compared to other aquatic plants.
Height:	3 - 5+
Average height (cm) of the plant after two months in the tank.
Light demand:	Low
The average or medium light demand of an aquarium plant is 0,5 W/L.
CO2 :	Low
A medium need in CO2 is 6-14 mg/L. A high demand in CO2 is approx. 15-25 mg/L.