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  Sonar Aquatic Herbicide

Sonar A.S. is an aquatic herbicide that is effective for the control of a variety of aquatic plants. Its active ingredient is 41.7% fluridone which effectively disrupts the process of photosynthesis, virtually starving the plants to death.

Sonar can be very selective with proper dosage rates and timing of applications. Sonar provides season-long control with an early spring application just after plants begin to grow.

Sonar effectively controls the following types of aquatic vegetation: duckweed, watermeal, cattails, eurasian watermilfoil, water lillies, american lotus, and most other pondweeds.

Application Rates: How much Sonar do you need to apply?

Watermeal - 90 ppb or typically 1 quart per acre
Duckweed - 75 ppb or typically 24 oz per acre
Cattails - 75 ppb or typically 24 oz per acre
Water Lilly - 75 ppb or typically 24 oz per acre
Eurasian Watermilfoil - 50 ppb or typically 1 pint per acre
Curly Leaf Pond Weed - 50 ppb or typically 1 pint per acre

Application Tips:
How do I apply Sonar?

Sonar A.S. is not a contact herbicide and should not be sprayed directly onto the vegetation. It is rather a whole lake treatment that needs to be diluted into the entire water column. The easiest and best way to apply Sonar is to pour approximately 16 oz of Sonar into a 5 gallon bucket of water and simply pour the mixture around your lake or pond. It works best if applied early in the growing season, and needs to be in contact with the lake weeds at the desired ppb for at least 21 days.

Water Use Restrictions:

Sonar is very safe for fish, fishing, animals, and swimming, even the same day of application. The only water use restriction it has is that irrigating is not recommended for 21-45 days following application. The fluridone could kill your plants if you use enough of the water for irrigating!

Read and follow all local, state and federal regulations pertaining to the

use and application of these products before ordering. DUE TO GOVERNMENTAL


- California
- Connecticut
- Massachusetts
- New Hampshire
- New Jersey
- New York
- Oregon
- Rhode Island
- Washington State
- Vermont

Item# Item Name Our Price Qty Add
ALG67 Sonar (8 oz.)
ALG38 Sonar (1 Pint)
ALG39 Sonar (1 Quart)
ALG40 Sonar (1 Gallon)
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