Weedtrine-D Aquatic HerbicideProduct Description Weedtrine D Aquatic Herbicide Ingredients 8. 53% Diquat Dibromide. Key Features For use in and around still lakes, ponds, lagoons, ditches, non crop, or non planted areas Controls a broad range of filamentous algae and submerged and floating aquatic weeds Recommended for small ponds less than 1 2 acre with submerged weed and duckweed problems Quickly absorbed by plants Made in the usa