A non-selective herbicide for both submerged and floating pond weeds. Effective in controlling duckweed, water hyacinth, pondweed, slender leaf pondweed, coontail and other aquatic weeds. Can be blended with other herbicides for many uses. 37.3% diquat dibromide formula kills surface and submerged weeds that are copper resistant. 2-8 quarts per surface acre depending on infestation and type of weed for aquatics.