Aquathol K Aquatic Herbicide

Aquathol K is a concentrated aquatic herbicide designed to control a wide range of submerged weeds, including hydrilla and curly-leaf pondweed. This contact herbicide works by disrupting plant cellular processes, delivering fast, effective control with minimal long-term residue. Aquathol K is ideal for use in ponds, lakes, and other aquatic environments where short exposure times and rapid dissipation are important. It does not readily bind to suspended sediment or organic matter, making it highly effective in turbid water conditions or areas with heavy organic debris.

Use Sites

Ponds • Lakes • Reservoirs • Canals • Irrigation Ditches • Drainage Systems • Managed Aquatic Sites

Target Weeds

Hydrilla • Curly-Leaf Pondweed • Elodea • Egeria • Coontail • Other Submerged Aquatic Weeds

Application Notes

Aquathol K is a contact aquatic herbicide that requires adequate exposure time for optimal performance. It is well suited for spot or partial water body treatments where rapid control and minimal residual activity are desired. Performance is not reduced by turbidity or organic matter in the water. Always apply according to the product label for best results and compliance with water use restrictions.

• Concentrated aquatic herbicide for submerged weed control
• Controls hydrilla, curly-leaf pondweed, and other submerged weeds
• Fast-acting contact activity with short exposure time
• Minimal residual and rapid dissipation in treated water
• Effective in turbid water and high organic matter conditions
• Professional-grade liquid concentrate formulation

ACTIVE INGREDIENT	40.3% Dipotassium salt of endothall
TARGET PESTS	American Pondweed, Coontail, Curly Leaf Pondweed, Eurasian Watermilfoil, Hydrilla/Elodea, Parrot Feather, Sago Pondweed, Southern Naiad
FOR USE IN	Ponds, Lakes, Canals, Reservoirs
APPLICATION	The rate of application ranges from 0.45 – 3.2 gallons of Aquathol K per acre foot of water.
MANUFACTURER	United Phosphorus
EPA REGISTRATION	70506-176
NOT FOR SALE TO	AK, CA, CT, DE, HI, ME, MD, MA, NH, NJ, NY, OR, RI, VT, WA (Restricted to licensed applicators only)
COMPARABLE PRODUCTS	Amphithal

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