Common duckweed

Lemna minor

Common duckweed is an easy, fast-growing plant for low light (no CO₂ needed). Spot: floating; 0.1–0.2 in tall.

Care at a glance

Light
Low: any basic LED. Medium: a planted-tank LED. Strong: a high-output planted light, usually with CO₂.
Low light
CO₂
CO₂ is carbon dioxide for growth. "Helps" means the plant grows without it, faster and denser with it.
No CO₂ needed
Growth
Fast
Care
Easy
Where
Floating
Height
0.1–0.2 in
Temperature
39–86°F
pH
5–9

How to plant it

  • Float it on the surface; keep it away from strong outflow and thin it out weekly.
  • Soft leaves: plant-eating fish and snails may eat it.

Also for this spot

Sources: Flowgrow DB: Lemna minor