Cutrine® Plus Granular Algaecide | Bottom-Growing Algae

Control for Ponds & Lakes

Control stubborn bottom-growing algae before it reaches the surface with Cutrine® Plus Granular Algaecide. Formulated with 3.7% chelated copper, this professional-grade granular algaecide sinks directly to the pond bottom where nuisance algae begin to grow, providing fast, targeted control of benthic algae such as Chara and Nitella.

Unlike liquid surface treatments, the heavy granules settle precisely where bottom-growing algae develop, making Cutrine® Plus Granular ideal for spot treatments around docks, beaches, swimming areas, boat launches, and shorelines. Visible algae control typically begins within 24 to 72 hours, helping restore cleaner, more enjoyable water.

When used according to label directions, treated water may be used immediately for swimming, fishing, livestock watering, and irrigation, making it a convenient solution for residential ponds, recreational lakes, golf courses, and fisheries.

Key Features & Benefits

• Professional-grade 3.7% chelated copper granular algaecide
• Targets bottom-growing algae before it reaches the surface
• Excellent control of Chara, Nitella, and other labeled benthic algae
• Fast-acting formula with visible results in 24–72 hours
• Granules sink directly to problem areas for precise treatment
• Ideal for docks, beaches, boat launches, shorelines, and swimming areas
• Excellent for spot treatments and localized algae control
• No water-use restrictions for swimming, fishing, livestock watering, or irrigation when used according to label directions
• Easy-to-apply granular formulation
• For use according to all label directions and local regulations

Best Applications

Ideal For

• Chara (muskgrass)
• Nitella
• Bottom-growing (benthic) algae
• Docks and boat launches
• Beaches and swimming areas
• Targeted shoreline treatments

Not Recommended For

• Treating an entire pond with heavy algae growth in a single application. Treat one-third to one-half of the affected area at a time to help protect aquatic life.

How It Works

Cutrine® Plus Granular sinks rapidly through the water column and settles directly on bottom-growing algae. The chelated copper formulation begins controlling algae on contact, producing visible results within 24–72 hours while providing targeted treatment exactly where nuisance growth develops.

For best performance, apply early in the growing season when water temperatures reach approximately 60°F (16°C) or higher, before algae become well established. Early treatment typically provides better control while reducing the amount of product needed throughout the season.

Always read and follow the product label for approved aquatic uses, application rates, target species, and safety precautions.

• Cutrine Granular 12 lb. jug
• Cutrine Granular 30 lb. jug