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.