Liquid Herbicide for Easy Use
Easy to apply using a tank sprayer. Weeds will begin to brown and die within 7-10 days. Early season emergent treatments may require additional applications.
For best results, use with a surfactant such as Airmax Treatment Booster Plus.
Broad Spectrum Pond Weed Control
Fast Acting Liquid Aquatic Herbicide
Airmax Ultra PondWeed Defense herbicide works on pond weeds including submerged, floating, and emergent weeds. This pond herbicide may also be used for short-term control of duckweed and watermeal in slow moving water.
Treated vegetation will begin to brown and die within 7-10 days. 32 fl oz treats up to 5,000 sq ft. Can be used in residential, farm, commercial, and industrial ponds, lakes, and lagoons.
- Controls Submerged, Floating & Emergent Weeds
- Short-Term Control of Duckweed
- 32 fl oz treats up to 5,000 sq ft.
How to Apply
Mix the amount of Ultra PondWeed Defense and Treatment Booster Plus (if using) with pond water in a tank sprayer according to label instructions. Use a pressurized pond sprayer to spray the Ultra PondWeed Defense mixture directly onto the target weeds.
When to Apply
Ultra PondWeed Defense has no temperature restriction, but it should only be applied when weeds are actively growing. Use with Treatment Booster Plus for best results.
Restrictions
- Wait three days before using treated water for human drinking water.
- Wait one day before using treated water for livestock and domestic animal consumption.
- Wait five days before using treated water for irrigation.
Chemical Application Best Practices
Any time you use chemicals to treat weeds, please keep in mind the following:
- Treat your pond in sections. Treat only half the pond's surface at a time. During hot weather or when treating heavy growth, it is important to treat no more than 1/4 of your pond at a time and wait the full 14 days before re-applying. This schedule helps lower the risk of fish loss during hot weather or when treating heavy growth.
- Once the weeds have browned & died, use a rake to remove as much dead material as possible. This prevents an accumulation of dead plant material and muck.
- We recommend a proactive approach to pond management. Use Airmax PondClear, EcoBoost PRx, MuckAway, and Pond Dye to keep your pond looking great.
FAQs
Is Ultra PondWeed Defense harmful to fish?
When used as directed, it will not harm fish, wildlife, birds, livestock, or pets. Can be used in ponds containing koi and goldfish.
How will I know if the product is working?
Vegetation will start to turn yellow or brown 7-10 days after treatment. Once the weeds have browned and died, use a rake to remove as much dead material as possible.
Does it kill algae?
No, it is not an algaecide and will not kill algae in your pond or lake. Airmax Ultra PondWeed Defense aquatic herbicide works on pond weeds, including submerged, floating, and emergent weeds. If you're looking for an algaecide, consider Airmax Algae Defense, a fast-acting, liquid pond algaecide that controls a broad spectrum of algae.
What is the active ingredient?
Diquat Dibromide is the active ingredient in Ultra PondWeed Defense.
Does this product have any water use restrictions?
Wait three days before using treated water for human drinking, one day for livestock and domestic animal consumption, and five days before using treated water for irrigation. See product label for complete details.
What should I wear when applying this product? For proper personal protective equipment (PPE) and application instructions, please refer to the product label or manual. Always follow label directions for safe and effective use.