Aquathol® Super K is a unique concentrated granular formulation and one of the most versatile and effective aquatic herbicides ever developed. Usage Rate Recommendations: 3.3 - 22 Pounds per Acre foot. Target Pests: Coontail Horned Pondweed Hydrilla Hygrophila Milfoil Naiad Parrotfeather Pondweed Sago Pondweed Water Stargrass. Areas of Use: Ponds Small Lakes Flowing Water Bodies.