Cutrine® Plus Granular Algaecide

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Cutrine® Plus Granular Algaecide stands out with its granular formulation, uniquely engineered to target and control tough algae varieties. Designed for precision and potency, Cutrine® Plus directly addresses the challenges posed by bottom-growing filamentous algae and benthic algae like Chara and Nitella. 

This specialized formula also proves effective against invasive aquatic plants such as Hydrilla, offering a comprehensive aquatic plant management solution.

Utilizing a unique chelated copper formulation, Cutrine® Plus is more stable than alternatives, ensuring longer-lasting effects in the water. This stability reduces the need for frequent reapplication, making it a cost-effective and efficient option for managing aquatic environments.

Rapid and Effective Algae Control

Cutrine® Plus employs rapid sinking granules that deliver the active ingredients directly to the bottom layers of water, where algae and unwanted vegetation thrive. 

This targeted approach ensures that algae control starts from the root, leading to a cleaner, clearer aquatic environment within just 1-2 days after application. This method is particularly effective for deeper waters or densely populated algae zones.

How is Cutrine® Plus different from other granular algaecides?

Unlike typical copper sulfate treatments, Cutrine® Plus offers several advantages:

  • Targeted Action: Its granules are formulated to sink quickly to the algae’s growing regions, ensuring effective control right where it’s needed.
  • Enhanced Longevity: The chelated copper formula remains active longer, reducing the frequency of treatments and maintaining algae control over extended periods.
  • Eco-friendly: Designed with environmental impact in mind, it minimizes copper release into the environment, offering a safer alternative for aquatic life.


  • Specially formulated granules for rapid sinking and targeted algae control.
  • Quick, visible improvements in algae control within 1-2 days.
  • Extended activity in water provides long-term control with fewer applications.


Q: How often should Cutrine® Plus be applied? 

A: Apply initially where algae grows, and repeat the treatment every two weeks if necessary.

Q: Is Cutrine® Plus safe for fish and other aquatic life? 

A: When used as directed, Cutrine® Plus is safe for the aquatic environment.

Q: Can Cutrine® Plus be used in any type of water body? 

A: Cutrine® Plus is suitable for use in various slow-moving or still water bodies, as listed in the “Where to Use” section.


Area Coverage: Apply 60 lbs per surface acre.

  1. Assess the size of your desired treatment area.
  2. Apply the product from the shoreline, ensuring an even coating over the area.
  3. Wait two weeks between applications and repeat in untreated areas.

Seasons of Usage

  • Spring
  • Summer
  • Fall

Where to Use

Applicable to a variety of aquatic settings:

  • Ponds
  • Lakes
  • Reservoirs
  • Wetlands
  • Marshes
  • Swamps
  • Bayous
  • Ditches
  • Canals
  • Streams
  • Rivers
  • Creeks

When to Use

Apply when algae is present and growing.

Shipping Restrictions

Cannot ship to WA, PR, NY, NJ, ME, HI, CT, CA or AK

Weed Kill List

Additional information

Weight 5.4 lbs


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