Cutrine Plus Granular Algaecide

5 out of 5 stars 3 Reviews | 5 Q&A

Cutrine Plus Granular Algaecide

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Average Rating

5 out of 5 stars Rating: 5

3 Reviews | 5 Q&A

Product Overview

Cutrine Plus Granular Algaecide is an algaecide from Applied Biocheists, capable of quickly clearing acres of troublesome bottom growing algae, particulary Chara, Nitella, Filamentous, and Hydrilla. When under control, algae is serves a useful purpose in their environments, from stabilizing sediments to providing food for fish, birds, and other aquatic life. However, algae can grow out of control, interfering with recreational uses of the affected area as well as hurting the resident aquatic life. That is where Cutrine Plus Granular Algaecide comes in, offering 5 to 6 weeks of algae control. When treating the body of water, only treat 1/3 of the area at a time to avoid oxygen depletion of the water, which could be fatal to the fish population. Safe to use with no water use restrictions when used as directed on the label. Use Cutrine Plus for clear and clean water.

Also comes in the liquid form - Cutrine Plus Algaecide which is great for surface algae.

This one, the granular form, is ideal for bottom growing filamentous algae, Chara and Nitella. Liquid version must be diluted prior to use while the granular form is ready to use.

Features and Specs

Active Ingredient: Copper ethanolamine complex 10.7%
Target pests: Chara, Nitella, Hydrilla & bottom growths of Filamentous Algae
* See label for complete list
For use in: Farm Ponds, Fish Hatcheries, Golf Courses, Lakes, Ponds, Swimming areas, Water Reservoirs
* See label for complete list
Application: 30 lbs. per .5 acres (60 lbs. per surface acre) * 1 lb. per 720 square feet
* Broadcast by Hand or Use a Dry Fertilizer Spreader
* May be Used for Swimming, Fishing, Livestock Watering , Lawns, Ornamental Plants after Treatment
* See label for complete application instructions
Pet safe: Yes, if used as directed on label
* Do not use in water with Koi or hydrid Goldfish
* Toxic to Trout if the Carbonate Hardness of the Treated Water is Less than 50 ppm
Formulation: Professional Product
CT, ME & NY (Commercial Applicators Only)
Coverage Area: 30 lbs. per Half Acre
Special Features: No Water Restrictions and No Wait Time before Animals and Human Consumption
Time to Kill: Works Within 24 to 48 Hours and Lasts up to 5 Weeks
Shipping Weight: 30.18 lbs
Manufacturer: Applied Bio Chemists (Mfg. Number: AB8016030)
UPC: 038005902302
EPA Registration: 8959-12



A. LARGE AREA TREATMENT (over 5000 sq. ft.)

  1. Identify forms of targeted bottom-growing algae (Chara/Nitella or Filamentous) or Hydrilla.
  2. Estimate the height of targeted plant growth (in ft.) in the water column. This would be the distance from bottom to top of plants.
  3. Calculate surface area (acres of the treatment area (area of infestation) using the following formual: Length (ft.) x Width (ft.)/43560= Surface Acre(s)
  4. Refer to Table 1 to determine lbs. of Cutrine-Plus Granular Algaecide to apply per surface acre based upon type and height of targeted growth.
  5. Distribute Cutrine-Plus Granular Algaecide evenly over the water surface directly over the targeted vegetation, varying rates with the height of the vegetation in the water column. A dry fertilizer spreader may be used to ensure even distribution.

Pounds of Cutrine-Plus Granular Algaecide to Apply per Acre

  Height of Plant Growth (feet)    
Form of Algal Growth 1 2 3
Bottom Filamentous 20 40 60
Chara / Nitella 30 60 90
Hydrilla 70 140 210

B. SMALL AREA (SPOT) TREATMENT (under 5000 sq. ft.)

For treatment around small areas such as docks, rafts, water intakes, etc, apply product uniformly at the rate of 1.5 pounds (24 oz.) per 1000 sq. ft. (In areas less than 1 ft. deep, reduce dosage by 2 oz. per inch of water per 100 sq. ft. so as to not exceed 1.0 ppm copper).


The following suggestions apply to the use of this product as an algaecide in all approved use sites:

  • Apply Cutrine-Plus Granular Algaecide before growth has reached the surface and begun to form mats or canopies. If this has already occured, application of Cutrine-Plus liquid is recommended.
  • Calm and sunny conditions when water temperature is at least 60 degrees Fahrenheit will usually expedite control results.
  • Visible reduction in algae growth should be observed in 24 to 48 hours following application with full effects of treatments (bleaching and breaking apart of plant material) sometimes taking 7-10 days depending upon algae forms, weather, degree of infestation and water temperatures.
  • Re-treat areas if re-growth begins to appear and seasonal control is desired.
  • Minimum re-treatment interval between consecutive treatments is 14 days.
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  • 5 of 5 Stars

    Granular algaecide that works

    By Rd on 02/24/2019

    Granular algaecide works great to kill algae beneath the water. I use it around the edge where algae usually forms first in my pond. I apply when I see algae first beginning to grow.

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    1 of 1 people found this review helpful

  • 5 of 5 Stars

    Customer Service

    By M on 10/26/2018

    When our order was not delivered correctly, the company logged a tracer right away even before I could contact the delivery company. Nice service.

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  • 5 of 5 Stars


    By Roger on 06/28/2019

    Verified Purchase

    Needed to eliminate tadpole infestation in a pond under construction. Worked very effectively.

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Questions & Answers

Have a question about this product?
Have 3 acre area only 3-4 ft depth how much to kill pond and duck weed plus algae
 Cutrine Plus Granular Algaecide Best to be applied on a sunny and calm morning. Spread granules over water area, 30 lbs of Cutrine Plus Granular Algaecide per .5 acres, 60 lb per surface acre or 1 lb. per 720 square feet. Broadcast by hand or using a dry fertilizer spreader. Copper will be released over time to provide control in flowing water situations. Water treated with CUTRINE PLUS GRANULAR ALGAECIDE may be used for swimming, fishing, drinking water treatment, livestock watering or irrigating turf, ornamental plants or crops following treatment. For controlling Chara, treat in spring and summer or whenever weed is soft. One application should be plenty to control Chara for the whole season. Filamentous algae will often need re treatments to control. Start early, when temperatures are 60 degrees F and higher in the spring. Control will last for weeks to months and re-treatments may be necessary. Please wait 1 - 2 weeks between treating. See product label for specific details.

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7 of 8 people found this answer helpful

How long after applying Cutrine Plus Granular Algaecide to our pond can we swim in it?

According to the manufacturer, there is no wait time for swimming after applying Cutrine Plus Granular Algaecide.

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6 of 6 people found this answer helpful

Can Cutrine Plus Granular Algaecide be dissolved in water for a spray application?

The Cutrine Plus Granular Algaecide should not be dissolved for a spray solution. Cutrine-Plus Algaecide can be mixed with water and applied in a sprayer for the application you are seeking.

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1 of 1 people found this answer helpful

Can I use Cutrine Plus Granular Algaecide in a 265 ft bored well for irrigation?

My well has green algae and it is hurting my lawn


Cutrine Plus Granular Algaecide is not labeled for use inside of drinking wells. According to the manufacturer, if the product is used in a pond/lake/stream, exactly as the label states, the water out of the pond can be safely consumed. However, this product is not labeled for use inside of wells.

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1 of 1 people found this answer helpful

Can livestock drink from a water source that has been treated with Cutrine Plus Granular Algaecide?

Can you irrigate from the pond after treatment?


Yes, livestock such as cows, sheep, goats, etc can drink from water that has been treated with Cutrine Plus Granular Algaecide.  Directly from the label: CUTRINE-PLUS GRANULAR ALGAECIDE may be used for swimming, fishing, drinking water treatment, livestock watering or irrigating turf, ornamental plants or crops following treatment.

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Cutrine Plus Granular Algaecide 5 out of 5 stars Rating: 5 (3 Reviews / 5 Q&A)

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