Hydrothol 191 Granular

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Hydrothol 191 Granular: Is a highly effective granular algaecide and herbicide. Apply when target algae and aquatic plants are actively growing. Note: susceptibility may vary due to subspecies, stains and environmental conditions.

For best results, use a Surfactant such as Cygnet Plus or Cide Kick ll with this product. 

Algae Range

• .05 ppm: 3 lb per acre foot
• 3 ppm: 162 lb per acre foot

Weeds Range

• .75 ppm: 40 lb per acre foot
• 5 ppm: 270 lb per acre foot

Specific rates

– Dependent on species (see label)

Susceptible Weeds/Algae

Algae

• Plantonic, Filamentous and Branched

Weeds

• Bur Reed, Cabomba, Coontail, Egeria, Elodea, Horned Pondweed, Hydrilla, Hygrphilla, Milfoil, Sago Pondweed, Vallisneria, Water Stargrass, (Pondweeds: American, Largeleaf, Curlyleaf, Flatstem, Floating-leaf, Illinois, Narrowleaf,

Threadleaf, Variable Leaf)

Drinking

• Assay under .1 ppm

Livestock watering

• 0.3 ppm = 7 days
• 3.0 ppm = 14 days
• 5.0 ppm = 25 days

Irrigation

• 7 days*

See label for specific details