Filamentous algae yes, duckweed not so much. Not unless that's the only thing available to eat, and in an earthen pond, there's invertebrates on the bottom of the pond to consume first.


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).