GreenClean® Granular Algaecide

  • Control Algae Blooms At First Sight
  • Clear String Algae From Streams & Waterfalls
  • Remove Excess Organic Debris

GreenClean Granular Algaecide is a non-copper based algaecide that works on contact to control algae in ornamental ponds, watering gardens, and other water features. Through its patented formula, GreenClean® algaecide immediately begins fighting algae blooms, releasing oxygen into the water body as it biodegrades. GreenClean Granular Algaecide also quickly eliminates algae on a wide variety of surfaces, such as water fountains, statues, and walkways. GreenClean® algae treatments come ready to use and begin working within 60 seconds of application.

Tech Specs

Usage Information

GreenClean(r) 2.5 Pounds
2.5 Pounds
GreenClean(r) 8 Pounds
8 Pounds
Application Granular Granular
Shelf Life 2 Years 2 Years

Dosage Rates

Pond Size (In Gallons)
High Curative Rate
Low Curative Rate
50 1 tbsp 0.5 tbsp
100 1.5 tbsp 1 tbsp
500 1/2 cup 1.5 tbsp
1,000 1 cup 3 tbsp
5,000 5 cups 1 cup
10,000 10 cups 2 cups

How To Apply

Directions for treating String Algae: Turn off circulation. Apply GreenClean® Granular Algaecide to affected areas, including waterfalls and streams. Turn pond circulation back on after letting GreenClean® work for 10 to 20 minutes.
Directions for treating Green Water (planktonic) Algae: Shock with GreenClean® at the High Curative Rate. Treat as needed once per week with GreenClean® at the Low Curative Rate.


Replacement Parts

Here are the replacement parts for GreenClean ® Granular Algaecide.

Weeds Treated

The first step towards effectively treating any pond weed is proper identification. GreenClean® Granular Algaecide is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.