Aquathol K Liquid Herbicide

Aquathol K Liquid Herbicide is effective against a broad range of aquatic plants with a wide margin of safety to fish and other aquatic life. Aquathol K may be used in quiescent or slow moving waters and flowing water systems.

Aquatic Plants Controlled by AQUATHOL K

Aquathol® K liquid herbicide is a concentrated herbicide formulated to effectively eliminate a wide variety of submerged weeds. Aquathol® K begins working on contact to inhibit protein synthesis while breaking down cellular structure or submerged weeds including hydrilla, and curly-leaf pondweed.

Aquathol® K dissipates quickly leaving no residue. The short residual contact time (12 - 48 hours) makes it effective in a variety of applications. Aquathol® K liquid herbicide will not bind to suspended sediment or organic matter making it ideal for use when high turbidity and organic debris is present.

Product Label  |  SDS Sheet

Begins to Work on Contact for No-Wait Control

Initial results normally begin occurring in 1 to 3 days. Full kill takes place in 1 to 2 weeks. As weeds die they drop to the bottom and decompose. When applied at labeled rates, Aquathol® K is safe for the environment, and animals including fish, birds and other aquatic life.


Application overview

Aquathol® K is a contact herbicide; consequently, apply when target plants are present. Aquathol® K should be sprayed on the water or injected below the water surface. It may be applied as a concentrate or diluted with water depending on the equipment. In general, our applicators dilute this product with nine parts water to ensure full coverage of the application site.

The rate of application ranges from 0.45 – 3.2 gallons of Aquathol® K per acre foot of water. Required application rate is dependent on the targeted plant species, size of the treatment area, and depth of the water within the treatment site. Refer to the product label to determine the application rate required for your treatment.

Product Label  |  SDS Sheet

Do not apply before weeds are present. For best results, water temperature should be 50 degrees Fahrenheit or higher. Aquathol K treated water may be used for swimming, fishing, livestock watering and irrigating turf, ornamental plants, and crops with a few exceptions (please refer to the label). Application rates range from 0.45 to 3.2 gal per acre foot of water treated. Aquathol K Liquid Herbicide works especially well for early season curlyleaf pondweed, and should ideally be applied when water temps are between 55-60 degrees Fahrenheit to target young curlyleaf plants. Make sure to check local permitting requirements when applying this product, and always adhere to label guidelines for proper dosing.

NOTICE:  the 2.5 Gallon container CANNOT be shipped due to USA regulations. Available for in-store pickup only.