Hydrothol 191 Aquatic Algicide Herbicide – 2.5 Gallon
Hydrothol 191 is a liquid formulation that provides control of both weeds and algae. Used primarily as an algicide at rates of 0.05-0.3 ppm, it provides excellent control of a broad spectrum of algae including planktonic, filamentous, and branched algae. Hydrothol 191 also provides control of aquatic vascular plants and can be tank-mixed with Aquathol K to improve the efficacy on difficult-to-control weeds.Â
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Hydrothol 191, works relatively quickly providing algae control in just a few days, and weed control similar to Aquathol K. There are no restrictions on treated water used for swimming, fishing or irrigation
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Active Ingredient:Â Dipotassium salt of endothal 53.3%
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