When combating the toughest infestations

nutrient management

lower costs

Active Ingredient: Abamectin B1 0

Hydrothol 191 Aquatic Algaecide & Herbicide jug (2.5 gal) turf fertilizer When combating the toughest infestationsHydrothol 191 is a liquid aquatic algaecide and herbicide for control of algae and aquatic plants in quiescent, slow moving, and flowing water sites. It is especially useful for planktonic, filamentous, and branched algae, with typical algae rates from 0. 05 to 0. 3 ppm endothall acid and higher rates available where longer control or tougher species require it. Hydrothol 191 also controls submerged aquatic weeds such as hydrilla, pondweed, coontail,