UPL Hydrothol 191 Algaecide and Herbicide
Best fast acting solution for pond owners managing heavy aquatic growth.
A fast-acting, selective solution for managing submersed weeds and algae in ponds and lakes. It works quickly in both still and slow-moving water, offering a straightforward way to clear unwanted vegetation without restricting swimming or fishing.
$139.99
at
The Pond Shop
Who it's for
- Pond owners needing immediate results for heavy aquatic growth
- Property managers dealing with diverse and stubborn aquatic vegetation
- Landscapers and golf course superintendents maintaining surrounding greenery
Who should skip it
- Stocked pond owners prioritizing the safety of their fish populations
- Environmental stewards managing delicate or poorly aerated ecosystems
- Casual gardeners seeking a simple or low-maintenance solution
Performance breakdown
Treatment Speed
Rapid contact action clears stubborn aquatic weeds faster than most competitors.
Application Ease
Granular broadcast method makes uniform coverage straightforward for large water bodies.
Versatility
Highly effective across both still ponds and slow-moving drainage ditches.
Recreational Safety
Zero restrictions on swimming or fishing immediately following proper application.
Regulatory Accessibility
Strict shipping prohibitions across many states significantly limit availability.
Usage Flexibility
Extended irrigation and consumption waiting periods require careful long-term planning.
Key Specs
Weight
20 lbs
Form
Granular
Application
Broadcast
Compatibility
Still and slow-moving water
Restrictions
Cannot ship to AK, CA, CT, DC, DE, HI, MA, ME, NJ, NY, PR, RI, VT, WA
Know before you buy
Still have a question?
Ask Metto anything about the UPL Hydrothol 191 Algaecide and Herbicide before you decide.
