Greater Duckweed, Giant Duckweed (Spirodela polyrhiza)
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Greater Duckweed, Giant Duckweed (Spirodela polyrhiza)


Common Name: Greater Duckweed, Giant Duckweed
Proper Name: Spirodela polyrhiza
Category: Floating Plants
Temperature: 15 - 30 C
PH: 6-8
Lighting: Medium
Growth Rate: Fast
Difficulty: Very Easy
Origin: Cosmopolitan
Position in Aquascape: Floating
Algae Grower
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This look better than the lesser duckweed. I have them in my shrimps tank to help control the nitrates but they are growing too fast. They take over the surface in just 1.5 weeks
Planted Tank Enthusiast
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I didn't like normal duckweed but this stuff is okay.
Planted Tank Obsessed
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I love this stuff, way easier to get rid of than lesser duckweed
Junior Member
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Duckweed is great to absorb excess nutrients, and to provide shade for animals and low light plants. To prevent them from covering the entire surface, u can make a sort of barrier to prevent them from floating all over the place

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