Aquathol® Super K

What is Aquathol Super K?

Aquathol Super K is a granular broad spectrum herbicide used to kill a variety of submerged weeds.

What is the active ingredient in Aquathol?

The active ingredient in Aquathol Super K is dipotassium salt of endothall.

How to apply Aquathol Super K?

Broadcast the granules evenly over where the weeds are.

Is granular or liquid better?

Either liquid or granular Aquathol K will yield great results.

How does this compare to Aquathol K liquid?

The application methods for Aquathol K and Aquathol Super K differ: mix and spray Aquathol K liquid or broadcast Aquathol Super K granules. They also have different percentages of the active ingredient.

Is Super K safe for fish and wildlife?

Aquathol Super K is EPA approved for aquatic use. It is labeled as toxic to mammals; be sure to follow livestock watering restrictions on the label.

Will Super K kill curly leaf pondweed?

Aquathol Super K will give excellent control of curly leaf pondweed, milfoil, and many other submerged weeds.

When should I apply Aquathol Super K aquatic herbicide?

Apply Aquathol Super K when the weeds are actively growing. It needs 12-48 hours of contact time.

When will I see results after applying Aquathol?

You’ll see full results in 17-21 days.

Read all labels for complete instructions before applying products.

Weed identification

Our recommendations:

Submerged weed control

Floating weed control

How to apply

• Use a broadcast spreader or scoop for easy application
• Evenly broadcast the granules over the plants

When to apply

• Apply on a sunny, calm day
• Treat when plants are actively growing and near the surface of the water
• May use second treatment at least 30 days after first application

Other tips

• Application rates based on a 4 ft. average depth, areas with dense growth may require a higher rate to be used
• Needs 12-48 hours of contact time
• Once dissolved, Aquathol Super K granules’ byproduct is a polymer, jelly-like substance; these may wash up on shore

View our video demonstration to see how easy it is to apply Aquathol Super K:

Aquathol Super K Label

Aquathol Super K SDS

Aquathol Super K NY SLN

Aquatic herbicides water use restrictions according to label:

• Swimming: 0 days
• Drinking water: do not apply within 600 ft. of potable water intake; MCL (Maximum Contamination Level) 0.1 ppm for potable water
• Domestic uses: 0 days
• Fish consumption: 0 days
• Irrigation for food/crop: not to exceed 5 ppm per application, 30 ppm per growing season
• Irrigation for turf/ornamental: 0 days
• Livestock watering: do not apply within 600 ft. of potable water intake; MCL (Maximum Contamination Level) 0.1 ppm for potable water

Hazmat shipping fee for 20 lbs. and 40 lbs. is $30.00.

FREE shipping on orders $99+

Orders $98.99 or less will be charged $12.95.

Orders are usually shipped within one day by a ground carrier.

U.S. shipping only.

Certain regulations apply for shipping to AK, CA, CT, DE, HI, ME, MD, MA, NH, NJ, NY, VT, WA. Please contact us if you live in one of these states: 1-877-428-8898.