Sonar® Genesis is the newest Fluridone based liquid aquatic weed control treatment from SePRO!

A new and improved Sonar® formulation Eliminates Duckweed, Watermeal and other nuisance weeds faster, and is so easy to apply!

Sonar® Genesis is the latest Sonar® formulation innovation from SePRO—25 years and still getting better! Sonar® Genesis was designed to be an easier to use formulation that lasts longer in the water and provides a faster knockdown on many floating and emergent weed species. This convenient 1/2 lb. formulation contains 6.3% active Fluridone and provides a lower cost per gallon product improving operations for applicators.

It’s inevitable that lakes and ponds will accumulate enough organic matter that they become a world class underwater greenhouse! The problem is, these rich aquatic ecosystems often turn into a subsurface jungle of troublesome nuisance weeds that persist and persist. For many homeowners and management companies, treating these infestations becomes laborious and tiresome, and not to mention COSTLY!

Why Does Sonar® Genesis Work So Well?

Sonar® compared to Sonar® Genesis

Sonar® compared to Sonar® Genesis

Sonar® Genesis contains Fluridone, which is a plant based chemical herbicide that prevents plants from the breakdown of chlorophyll. And this new formulation is created using a much smaller molecule than its predecessor; allowing for much faster uptake by the plant and better penetration into the tiniest aquatic weeds such as Watermeal.

While Sonar® has an unmatched reputation for being a fantastic weapon against invasive aquatic weeds, total Watermeal control did pose a problem for some lake and pond owners due to traditional fluridone sometimes running into issues completely eradicating Watermeal because of its micro-sized protective membrane.

But, those days are gone! The new Sonar® Genesis was created to deal with the tiniest of plant membrane. And its ultra-small molecule is extremely proficient at penetrating even the smallest of membranes. The result? Faster and more efficient aquatic weed control and less resistance.

Rather than ‘give in’ to never-ending growth, repeat treatments and exorbitant herbicide costs, now you can finally eliminate severe weed infestations such as Watermeal, Duckweed and many other invasive plants. Gone are the days of living with the frustration of starring at your beautiful pond that has been overtaken by these nuisance growths. With Sonar Genesis, those days will soon become nothing more than distant memories!

Application to Ponds

Sonar Genesis may be applied to the entire surface area of a pond. For single applications, rates may be selected to provide 30 to 90 ppb to the treated water. Use the higher rate within the rate range where there is a dense weed mass, when treating more difficult to control species, and for
ponds less than 5 acres in size with an average depth less than 4 feet. Application rates necessary to obtain these concentrations are shown in the following table. For additional application rate calculations, refer to the Application Rate Calculation section of this label. Split or multiple applications may be used to control more difficult target plants and/or where dilution of treated water is anticipated; however, the sum of all applications must not exceed a total of 90 ppb per annual growth cycle.

Sonar Genesis application amount chart

Sonar Genesis application amount chart

Happy days are hear again! With Sonar® Genesis, you can regain control of your aquatic ecosystem and eliminate nuisance weeds from the inside out! For years, fluridone based products have been leading the charge against invasive weed growth and this newest enhanced formula works faster and better to knock-down persistent Duckweed, Watermeal, Milfoil and more!

Sonar® Genesis Aquatic Herbicide for lakes and ponds


Superior Control Efficacy 98%
Ease of Use 100%
Speed of Takedown/Control 95%
Cost Effective 90%

Whole lake or Reservoir Treatments (limited or No Water discharge)
Single Application to Whole Lakes or Reservoirs

Where single applications to whole lakes or reservoirs are desired, apply Sonar Genesis at an application rate of 10 to 90 ppb ( For watermeal and heavy infestations 90 ppb is recommended). Application rates necessary to obtain these concentrations in treated water are shown in the following table. For additional rate calculations, refer to the Application Rate Calculation section of this label. Choose an application rate from the table below to meet the aquatic plant management objective. Where greater plant selectivity is desired such as when controlling Eurasian watermilfoil and curlyleaf pondweed, choose an application rate lower in the rate range. For other plant species, it is recommended to contact a SePRO Aquatic Specialist for determining when to choose application rates lower in the rate range to meet specific plant management goals. Use the higher rate within the rate range where there is a dense weed mass or when treating more difficult to control plant species.
Retreatments may be required to control more difficult to control species or in the event of a heavy rainfall event where dilution of the treatment concentration has occurred. In these cases, a second application or more may be required; however, the sum of all applications cannot exceed 150 ppb per annual growth cycle. Refer to the section of this label entitled, Split or Multiple Applications to Whole Lakes or Reservoirs, for guidelines and maximum rate allowed.


Sonar Application Chart to 90 ppb.

Sonar Application Chart to 90 ppb.

Vascular Aquatic Plants Controlled by Sonar® Genesis

Submersed Plants

bladderwort (Utricularia spp.)

common coontail (Ceratophyllum demersum)

common elodea (Elodea canadensis)

egeria, Brazilian elodea (Egeria densa)

egeria, Brazilian elodea (Egeria densa)

fanwort, cabomba (Cabomba caroliniana)

hydrilla (Hydrilla verticillata)

naiad (Najas spp.)

pondweed (Potamogeton spp., except Illinois pondweed)

watermilfoil (Myriophyllum spp., including M. spicatum x sibiricum hybrids)

Emersed Plants

spatterdock (Nuphar luteum)

water-lily (Nymphaea spp.)

watershield (Brasenia schreberi)

Watermeal and Duckweed on a persons finger
Sonar Genesis controls Watermeal and Duckweed as shown above

Floating Plants

common duckweed (Lemna minor)

Salvinia (Salvinia spp.)

Vascular Aquatic Plants Partially Controlled by Sonar® Genesis

Submersed Plants

Illinois pondweed (Potamogeton illinoensis)

limnophila (Limnophila sessiliflora)

tapegrass, American eelgrass (Vallisneria americana)

Emersed Plants

alligatorweed (Alternanthera philoxeroides)

American lotus (Nelumbo lutea)

cattail (Typha spp.)

creeping waterprimrose (Ludwigia peploides)

parrotfeather (Myriophyllum aquaticum)

smartweed (Polygonum spp.)

spikerush (Eleocharis spp.)

waterpurslane (Ludwigia palustris)

Floating Plants

common watermeal (Wolffia columbiana)

Shoreline Grasses

barnyardgrass (Echinochloa crusgalli)

giant cutgrass (Zizaniopsis miliacea)

reed canarygrass (Philaris arundinaceae)

southern watergrass (Hydrochloa caroliniensis)

torpedograss (Panicum repens)

Order Sonar® Genesis Today!


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