UPL Hydrothol 191 Granular Pond Algaecide and Herbicide Farm Pond Supplies_Aquatic Weed Control Products Works rapidly enough to be

Works rapidly enough to be effective in both still and slow-moving water

Mufflers come in two different sizes:

The muffler is the part where the filter is placed

and terrestrial weeds

non-selective effectiveness

UPL Hydrothol 191 Granular Pond Algaecide and Herbicide Farm Pond Supplies_Aquatic Weed Control Products Works rapidly enough to beHydrothol 191 Granular Algaecide Herbicide 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. EPA approved Works quickly Not swimming or fishing restrictions Works on both Algae and Pondweeds! Available in a 20 pound bag only. *Cannot be shipped to: AK, CA, CT, DC, DE, HI,