Short Answer:
Control duckweed with surface movement, nutrient reduction, and removal.
Detailed Answer:
Duckweed thrives in still, nutrient-rich water.
Control methods:
- Aeration (creates surface disturbance)
- Skimming/removal
- Nutrient control (especially phosphorus) with pond bacteria and/or binders
- Herbicides (if needed)
Key insight:
Duckweed is often a symptom of excess nutrients.
