Hydrothol 191 Aquatic Algaecide & Herbicide jug (2.5 gal) non-restricted use :contentReference[oaicite:1]{index=1} Application Notes

:contentReference[oaicite:1]{index=1} Application Notes

✓ Effective at low application rates

and apply when dew is present or after light irrigation

4-D Choline Salt 32

This advanced formulation improves active ingredient retention and rainfastness

Hydrothol 191 Aquatic Algaecide & Herbicide jug (2.5 gal) non-restricted use :contentReference[oaicite:1]{index=1} Application NotesHydrothol 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,