Hydrothol 191 - for getting rid of algae, weeds and more, in quiescent, slow moving, and flowing water aquatic sites.
Hydrothol 191 is a liquid concentrate soluble in water and is a highly effective aquatic algicide and herbicide. It is applied when target algae and plants are actively growing.
The susceptibility of algae may vary due to the subspecies, strains or environmental conditions.
Active Ingredient: Mono salt of endothall 53%