Product Overview

Cutrine® Plus Granular Algaecide is ideal for bottom-growing filamentous algae, and benthic algae such as Chara and Nitella. Also effective in controlling the rooted aquatic plant, Hydrilla.

  • Rapid sinking granules for targeted delivery to bottom-growing algae
  • Visible reduction of algae growth 1-2 days
  • Chelating agents prevent the precipitation of copper with carbonates and bicarbonates in the water for longer activity
  • Stays active in the water longer than copper sulfate
  • Ideal for algae in deeper waters or bottom growing algae – use Cutrine® Plus Algaecide (liquid) for algae on the surface or in the water column

Rapidly sinking granular provides fast, targeted results.

Granular products sink to control targeted problematic species, providing a more efficient uptake of the product. Cutrine® Plus Granular Algaecide sinks rapidly, then the chelated copper is released over time for optimal algae control.

Starry Stonewort, the macro-algae that invades lakes, harms native species, and inhibits water activities.

Field trials show efficacy controlling the nuisance, invasive Starry Stonewort.


Make sure the Applied Biochemist (AB) brand of products in your inventory are currently approved and registered for use in your state.

The Applied Biochemist brand products purchased by SePRO have been in transition from a regulatory process since the acquisition. All are federally registered and all existing AB factory manufactured (non-SePRO manufactured) inventory remains registered. Please visit to check for registered states.

Some of the new SePRO facility produced brand of AB products are still waiting for state registration approval. Although federally approved for many months, state registrations are still required and in process. State registrations are being updated daily. Please visit for the most up to date information. To check the current state registration status for a SePRO brand AB product, choose a product and click “REGISTERED STATES”.

Product Information Sheet

Labels and SDS

Specimen Label

Safety Data Sheet

Registered States


Mix and apply with a spreader or hand scoop to desired area. 

For use in residential ponds and small lakes to control underwater, stringy-filamentous algae.


Once treated, water is safe for consumption for animals and livestock and may be used for swimming purposes.

Experts in Aquatic Solutions

SePRO’s Technical Specialists are trained to assist you with your toughest issues, from aquatic weeds that keep coming back to nusiance or toxic algae that are plaguing a water body. See how we can help.