Alligare Flumigard SC Herbicide & Algaecide

A fast-acting broad-spectrum liquid herbicide used to control aquatic weeds and filamentous algae. Midwest Aqua Care identifies it as a top seller for Watermeal, Wolffia, and Duckweed.

Recommended for

Surface and submerged aquatic vegetation, especially duckweed and watermeal.

Active ingredient

Flumioxazin (4 lb/gal).

Product details & application

• Can be applied by surface or subsurface application.
• Tank-mix compatible with a range of other active ingredients.
• Use an aquatic-approved surfactant when directed by the product label.
• To reduce oxygen-depletion risk, treat only one-third to one-half of the water body at a time and wait 10–14 days between treatments.

Key plants / growth controlled

• Filamentous algae
• Eurasian watermilfoil
• Duckweed
• Hydrilla
• Pondweed
• Salvinia
• Southern naiad
• Water lettuce
• Watermeal
• Coontail

Application examples

• Lakeshore 100 ft × 100 ft: 29.44 oz
• Lakeshore 75 ft × 100 ft: 22.08 oz
• Lakeshore 50 ft × 50 ft: 7.36 oz
• 1.0 surface acre pond: 16 oz
• 0.50 acre: 8 oz
• 0.25 acre: 4 oz

Water use & safety

The supplied information states there are no swimming or fishing restrictions when used according to label directions.

Shipping restrictions

Cannot ship to: AK, CA, CT, DC, HI, ME, NJ, NY, OR, RI, VT, WA.

Important: Always refer to the current product label for exact application rates, restrictions, directions, and instructions.