Aquathol Super K Granular with potassium endothall is a selective, rapid-acting, contact herbicide. Controls submersed weeds in lakes and ponds. Works rapidly enough to be effective in both still and slow-moving water.

Aquathol Super K Granular with potassium endothall is a convenient ready-to-use granular product. Nothing to mix or spray. Begins working on contact with submerged weeds to break down cell structure and inhibit protein synthesis. Without this ability the weed dies.

Nothing to mix or spray.

Full kill takes place in 3 to 4 weeks. As weeds die they drop to the bottom and decompose. Effective anytime live weeds can be contacted. Best results occur when applied in spring and summer as water temperature rises to 65 degrees Fahrenheit or warmer.  With early treatment, less material is required and a longer weed-free period will result. Contact time with weeds should be at least 2 hours. In large bodies of water, longer-term control will result when treating a minimum of 1 acre or 100 ft. of shoreline. Although selective, Aquathol Super K Granular is effective on many different weeds.

Excellent pondweed control.

Recommended application rates for Aquathol Super K Granular ranges from 0.5 to 5.0 ppm . Safe for most fish at 100 ppm or more. For most Pondweeds growing in lakes or ponds 2.0 to 4.0 ppm will give excellent control. This rate is equivalent to 0.8 to 1.6 lbs. of Aquathol Super K Granular per 1000 sq. ft. at an average depth of 4 feet. When treating an entire pond you can use 25% to 50% less material and still achieve excellent control.

To determine pounds of Aquathol Super K Granular to use per 1,000 sq. ft.:

(application rate in ppm) x (average depth in feet) x (0.10)

To use 3.0 ppm at an average depth of 4.0 feet:

3.0 x 4.0 x 0.1 = 1.2 pounds per 1,000 sq. ft.

Treat heavy infestations in sections of 1/3 to 1/2 of the total weed volume to avoid oxygen depletion.  Allow 5 to 7 days before continuing to untreated areas.

See Water Use Restrictions (Days).