Very effective against a broad spectrum of submersed weeds, also controls problem algae at the same time. Hydrothol has been successfully used for over 20 years. The label says it all - pondweeds, naiads, milfoils, coontail, stargrass, hydrilla, canada waterweed and many algae types including the tough ones. A great choice for lakeshore weed & algae control. Rates of 3-16 lbs. per acre foot are effective for the control of algae. Apply Hydrothol Granular at 27 lbs. to 162 lbs. per acre foot for control of aquatic weeds.
