Harpoon Granular Aquatic Herbicide
Best aquatic herbicide for pond owners needing immediate water reuse.
This granular treatment is the most efficient way to clear stubborn submerged weeds without locking you out of your own pond. You trade the precision of a liquid spray for the convenience of immediate water reuse, making it the smartest choice for active, multi-use water bodies.
$229.99
at
PondScape
Who it's for
- Pond owners needing precise control over stubborn submerged weeds
- DIY enthusiasts seeking an easy application without specialized spray equipment
- Property managers requiring rapid vegetation clearing for immediate results
Who should skip it
- Conservationists concerned about maintaining healthy oxygen levels for fish
- Users with complex water chemistry needing a simpler treatment solution
- Pond owners trying to avoid long-term organic muck accumulation
Performance breakdown
Targeting Precision
Rapid sinking action delivers concentrated treatment directly to submerged root systems.
Operational Flexibility
Seamlessly transitions between localized spot treatments and full-scale pond management.
Post-Treatment Utility
Zero wait time for swimming, fishing, or irrigation maximizes water body accessibility.
Application Ease
Granular consistency allows for straightforward, controlled distribution across the water surface.
Invasive Weed Efficacy
Copper-based formula reliably neutralizes stubborn hydrilla and naiad infestations.
Formulation Stability
Stable granular structure ensures consistent delivery without premature surface dissolution.
Key Specs
Net Content
40 lbs
Active Ingredient
9.87% Copper Ethylenediamine Complex
Application Rate
40 to 240 pounds per acre-foot
Form
Granular
SKU
HARP40
Target Weeds
hydrilla, naiads, coontail, elodea, water hyacinth, Eurasian watermilfoil, sago, curly leaf, select other weeds in the pondweed family
Application Form
Granular
Application Timing Type
Post-Emergent
Application Area Type
Bare Ground
Coverage Area Per Unit
acre-foot
Know before you buy
Still have a question?
Ask Metto anything about the Harpoon Granular Aquatic Herbicide before you decide.
