Giant Duckweed - Spirodela polyrhiza
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Spirodela polyrhiza, also known as Giant Duckweed or Large Duckweed, is a fast-growing floating plant that provides excellent surface coverage and nutrient absorption. Its larger leaves compared to common duckweed make it an attractive choice for reducing light penetration and controlling algae in freshwater aquariums.
Common Name: Giant Duckweed
Scientific Name: Spirodela polyrhiza
Family: Araceae
Size: Individual fronds up to 0.2 inches (5 mm) wide
Difficulty: Easy
Native Region: Found worldwide in temperate and tropical freshwater environments
Tank Size: Suitable for small to large aquariums
Temperature: 65-82°F (18-28°C)
pH: 6.0-7.5
Lighting: Low to moderate
CO2: Not required
Substrate: Not applicable – floating plant
• Nutrient Absorber: Helps reduce excess nutrients, improving overall water quality.
• Light Diffusion: Provides shade and protection for fish and shrimp.
• Fast Propagation: Grows quickly; periodic thinning prevents excessive surface coverage.