{"product_id":"hydrothol-191-aquatic-algaecide-herbicide-jug-2-5-gal","title":"Hydrothol 191 Aquatic Algaecide \u0026 Herbicide jug (2.5 gal)","description":"Hydrothol 191 is a liquid aquatic algaecide and herbicide for control of algae and aquatic plants in quiescent, slow-moving, and flowing water sites. It is especially useful for planktonic, filamentous, and branched algae, with typical algae rates from 0.05 to 0.3 ppm endothall acid and higher rates available where longer control or tougher species require it.\n\nHydrothol 191 also controls submerged aquatic weeds such as hydrilla, pondweed, coontail, milfoil, naiad, sago pondweed, and other labeled aquatic plants. It may be sprayed on the water surface, injected below the surface, or applied through drip or metering systems in flowing water. Always read and follow the label before use.\n\n\u003ch2\u003eFeatures and Benefits\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eLiquid aquatic algaecide and herbicide for professional water management\u003c\/li\u003e \u003cli\u003eControls planktonic, filamentous, and branched algae\u003c\/li\u003e \u003cli\u003eProvides control of labeled submerged aquatic plants\u003c\/li\u003e \u003cli\u003eWorks quickly, with visible algae control usually observed in a few days\u003c\/li\u003e \u003cli\u003eCan be applied as a surface spray, subsurface injection, or metered flowing-water treatment\u003c\/li\u003e \u003cli\u003eCan be tank-mixed with Aquathol K where labeled to improve difficult aquatic weed control\u003c\/li\u003e \u003cli\u003eUseful in lakes, ponds, slow-moving water, and certain flowing-water applications\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eUse Sites\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eLakes\u003c\/li\u003e \u003cli\u003ePonds\u003c\/li\u003e \u003cli\u003eQuiescent water bodies\u003c\/li\u003e \u003cli\u003eSlow-moving water\u003c\/li\u003e \u003cli\u003eFlowing water, excluding irrigation canals where restricted by label directions\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eTarget Weeds and Algae\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePlanktonic algae\u003c\/li\u003e \u003cli\u003eFilamentous algae\u003c\/li\u003e \u003cli\u003eBranched algae\u003c\/li\u003e \u003cli\u003eFloating algae mats\u003c\/li\u003e \u003cli\u003eHydrilla\u003c\/li\u003e \u003cli\u003eCoontail\u003c\/li\u003e \u003cli\u003eMilfoil\u003c\/li\u003e \u003cli\u003eNaiad\u003c\/li\u003e \u003cli\u003ePondweed species\u003c\/li\u003e \u003cli\u003eSago pondweed\u003c\/li\u003e \u003cli\u003eElodea\u003c\/li\u003e \u003cli\u003eEelgrass\u003c\/li\u003e \u003cli\u003eWater stargrass\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eApplication Notes\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eAlgae control: generally 0.05–0.3 ppm endothall acid, or 0.6–3.6 pints per acre-foot.\u003c\/li\u003e \u003cli\u003eFloating algae mats: use a 3–5% spray solution with a minimum of 0.5 gallon per surface acre.\u003c\/li\u003e \u003cli\u003eSubmerged aquatic plants: 1–5 ppm, or 1.4–6.8 gallons per acre-foot.\u003c\/li\u003e \u003cli\u003eApply when algae and aquatic plants are actively growing.\u003c\/li\u003e \u003cli\u003eDo not use in waters containing koi or hybrid goldfish.\u003c\/li\u003e \u003cli\u003eDo not use in brackish or saltwater.\u003c\/li\u003e \u003cli\u003eFish may be killed by dosages over 0.3 ppm; higher-rate applications should be made as marginal or sectional treatments.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eProduct Information\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eActive Ingredient:\u003c\/strong\u003e Mono(N,N-dimethylalkylamine) salt of endothall – 53.0%\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAcid Equivalent:\u003c\/strong\u003e 23.36% endothall acid\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFormulation:\u003c\/strong\u003e Liquid concentrate\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEPA Reg. No.:\u003c\/strong\u003e 70506-175\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSignal Word:\u003c\/strong\u003e Danger\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e United Phosphorus, Inc. \/ UPL\u003c\/li\u003e \u003c\/ul\u003e","brand":"United Phosphorus","offers":[{"title":"Default Title","offer_id":49204343046282,"sku":"hydrothol1912.5m","price":238.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/9331\/8282\/files\/hydrothol_191.jpg?v=1778185228","url":"https:\/\/www.intermountainturf.com\/products\/hydrothol-191-aquatic-algaecide-herbicide-jug-2-5-gal","provider":"Intermountain Turf Supply","version":"1.0","type":"link"}