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

Aquathol® Super K Granular 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.

• Initial results in up to 3 days
• EPA Approve
• Safe for fish
• Easy to apply
• Excellent control for Pondweeds all season-long!

Available in 10 and 20-pound bags

Cannot be shipped to PR, HI, AK or Canada

Aquathol® Super K is a highly concentrated granular form of Aquathol®. This product contains 63% active ingredient and is made for use in ponds, lakes and slow moving water drainages. 

Application Rate

See Label for complete application rates 

Pro Tips:

Full kill takes place in 1 to 2 weeks, but you can see results in as little as 3 days.

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 when waters are 55ºF or above. 

Contact time with weeds should be at least 2 hours.

Although selective, AQUATHOL Super K Granular is effective on many different weeds.

Directions for use:

To apply AQUATHOL Super K Granular, simply broadcast the granules uniformly over the water surface by hand or use a mechanical spreader. Heavy weed infestations should be treated in sections 5 to 7 days apart to avoid oxygen depletion.

Water treated with AQUATHOL Super K Granular should not be used for irrigation, human or animal consumption for 7 days.

Pro Tips:

Full kill takes place in 1 to 2 weeks, but you can see results in as little as 3 days.

Cannot be shipped to PR, HI, AK or Canada

 Product SDS Sheet & Label

Aquathol Super K SDS Sheet                Aquathol Super K Label