APPLIED BIOCHEMISTS Cutrine-Plus Granular Algaecide 12 lb — Double-Chelated Copper for Ponds & Lakes

Cutrine-Plus Granular Algaecide is a double-chelated copper formula designed to quickly reduce filamentous and planktonic algae in ponds, lakes, and nearshore areas.

This 12-pound container from APPLIED BIOCHEMISTS delivers a concentrated, granular algaecide that targets bottom-growing and surface algae with a chelated copper complex that remains active in harder waters. The product is formulated for outdoor aquatic environments—docks, boat launches, beaches and fishing areas—and is intended for spot treatments and wider algae control projects. Before applying, confirm the water body and species present are compatible with copper-based treatments and note restricted shipping to CA, CT, ME, NH, NY, OR, and WA.

How fast will I see algae reduction after applying Cutrine-Plus?

Visible decline in algae often appears within one to two days after proper application. Response time depends on water temperature, algae type, and circulation; warmer, well-oxygenated water usually accelerates results.

• Typical improvement within 24–48 hours under ideal conditions.
• Works on filamentous mats and many planktonic blooms.
• Effectiveness increases with correct dosage and distribution.

Is Cutrine-Plus safe for my pond’s fish and plants?

This product contains chelated copper and is not suitable for water containing sensitive species when hardness is low. Specifically avoid use in koi, hybrid goldfish, or trout waters with hardness below 50 ppm. Always follow label directions and test water chemistry before treatment to protect desirable aquatic life.

• Contains 3.7% copper from mixed ethanolamine complexes.
• Do not use where koi, hybrid goldfish, or trout are present if hardness <50 ppm.
• Double chelation helps reduce copper precipitation in carbonated or bicarbonate-rich waters.

How do I apply this granular algaecide for best results?

Apply Cutrine-Plus according to the enclosed instructions and treat spots or broader areas depending on algae distribution. For bottom-growing algae, broadcast the granules over target zones; for floating mats, spot-treat and allow the product to settle and act where algae attach.

• Follow the included application guide for dosage per surface acre or per water volume.
• Use spot treatments along docks, beaches, boat ramps for concentrated control.
• Ensure even distribution and avoid overapplication; retest and retreat as needed.

Will water hardness affect performance and compatibility?

Cutrine-Plus is formulated with a double-chelated copper that improves stability in hard water and minimizes precipitation with carbonates and bicarbonates. Despite this, confirm water hardness and local species sensitivity to copper prior to treatment to ensure safe, effective use.

• Designed to work in “hard” water conditions more reliably than non-chelated copper products.
• Double chelation helps maintain copper availability to control algae.
• Test alkalinity and hardness before treatment to determine suitability.

Who this product is for: Cutrine-Plus Granular Algaecide is intended for property owners, lake managers, marina operators, and anglers who need a robust, economical solution for controlling green, golden, and cyanobacterial algae in outdoor freshwater environments. It suits users conducting spot treatments near docks, boat launches, or shorelines, as well as managers treating bottom-growing algae beds. This product is not recommended for waters with sensitive fish species when hardness is low, and it cannot be shipped to CA, CT, ME, NH, NY, OR, or WA. Read and follow the product label and local regulations before application to ensure safe and compliant use.

• Includes one 12-lb container of Cutrine-Plus Granular Algaecide and Herbicide by APPLIED BIOCHEMISTS.
• Double-chelated copper formula contains 3.7% copper from ethanolamine complexes.
• Effective for spot treatments, docks, beaches, boat ramps, and bottom algae control.