Duckweed

Duckweed remains freshwater floating-plant comparison context.

Duckweed remains prior comparison context; the new trial centers Water Spangles.

A week after addition, the duckweed was nearly gone while the water looked clearer and eelgrass and hornwort appeared to be helping pull nutrients from the system. The result pushed duckweed out of the sustainable plant plan and kept the focus on plants that could persist without constant re-adding.

Three days after addition, roughly half of the duckweed was already gone as flagfish, snails, shrimp, and crayfish grazed it down. Water spangles appeared more resilient, and eelgrass and hornwort were added as alternative plants that might redirect feeding pressure.