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United Phosphorus, Inc.

Aquathol K- 1 gal Aquatic Herbicide

Cannot be shipped to AK, CA, CT, DE, DC, HI, MA, ME, NJ, NY, RI, VT, WA or Canada
  • Aquathol Pond Herbicide
  • Aquathol pond weed killer
  • Aquathol K Pond weed treatment


Aquathol K Aquatic Herbicide Treatment 

Broad Spectrum Contact Herbicide for Submerged Weed Control. This aquatic weed killer will kill vegetation to the roots.

  • A great treatment choice for turbid water with excess organics
  • Spray on actively growing plants
  • Proper application requires mixing with AquatiStick for improved leaf penetration

Aquathol K 1 gallon treats 8,000 square feet


Aquathol K Active Ingredient: Dipotassium Salt of Endotholl

Kill submerged pond weeds including:

Pondweed Species including American, Curly Leaf, Floating Leaf, Horned, Illinois, Large Leaf, Narrow Leaf, Sago, Variable Leaf
Cabomba fanwort
Water Stargrass

Identify pond weeds and best chemical treatments here- Aquatic Weed Guide

How to mix Aquathol K:

 Aquathol K - Mix 16-31 oz Aquathol K with 1-2 gal of water and 2-4 oz Aquatistick to treat 1,000 sq ft. Submerge spray nozzle and apply on infested areas. 3 gallon Sprayer sold here

Apply early on a sunny day.

When should herbicide be applied?

Apply when pond weeds are actively growing. 

How long does it take Aquathol to kill submerged pond weeds?

Aquatic weeds typically begin to die within a few days of application.


Dipotassium Salt of Endotholl is not toxic to fish or animals. 

There are no restrictions on treated water for swimming, fishing or irrigation

 Read full Aquathol K Label for more details.  

Cannot be shipped to AK, CA, CT, DE, DC, HI, ME, MA, NJ, NY, PR, RI, VT, WA or Canada

Aquathol K Safety Data Sheet


Click here for more information about aquatic herbicides available for pond weed control

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Additional Information

Pond Weed Control
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