Diquat and surfactant will handle it no problem. I like to add a few drops of dye in tank so I know what areas I've treated and don't waste too much. Duckweed will be obliterated in a few days - responds very quickly to this herbicide combo. Treat it ASAP or you could be looking at a major problem down the road.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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