Works on Algae and Pondweeds!

HYDROTHOL 191 Granular with alkylamine endothall is a selective, rapid-acting, contact herbicide and algaecide. Controls submersed weeds and algae in lakes, ponds, irrigation canals, and drainage ditches. Works rapidly enough to be effective in both still and slow moving water. May be harmful to fish if applied at an application rate higher than recommended rates.

Available in:

10 lb. pail.
(treats 1,000 to 4,000 sq. ft.

40 lb. pail.
(treats 4,000 to 16,000 sq. ft.)

Water treated with HYDROTHOL 191 Granular should not be used for irrigation or human and animal consumption for 7 to 25 days depending on the application rate.

Cannot be shipped to: AK, CA, CT, HI, ME, NJ, NY, PR, WA or Canada

Click here to view Label for Hydrothol 191 Granular

Click here to view MSDS for Hydrothol 191 granular