Hydrothol 191 Aquatic Algaecide & Herbicide jug (2.5 gal) non-restricted use and apply when dew is

and apply when dew is present or after light irrigation

It is unlawful to use Piston on anything other than ornamental crops or fruiting vegetable crops in commercial greenhouses

✓ Effective at low application rates

EPA Registration Number: 2217-976

Hydrothol 191 Aquatic Algaecide & Herbicide jug (2.5 gal) non-restricted use and apply when dew isHydrothol 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. Hydrothol 191 also controls submerged aquatic weeds such as hydrilla, pondweed, coontail,