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GreenClean Granular Algaecide - 2.5 lbs - String Algae Control for Koi Pond, Fountain, Waterfall, Water Features on Contact

3.8 out of 5 stars 352 customer reviews

Price: $17.20 & FREE Shipping on orders over $25. Details
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2.5-Pound
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  • Treats up to 5,000 gallons.
  • Non-harmful to fish and aquatic plants when used as directed.
  • Alternative to harsh chemicals – Chlorine, copper and phosphate-free.
  • Begins working on contact, killing algae fast; results in 24 to 48 hours.
  • Immediately begins fighting algae blooms, releasing vital oxygen into the water body as it biodegrades.

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Frequently bought together

  • GreenClean Granular Algaecide - 2.5 lbs - String Algae Control for Koi Pond, Fountain, Waterfall, Water Features on Contact
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  • API POND-ZYME SLUDGE DESTROYER Pond Water Cleaner With Barley
Total price: $53.42
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From the manufacturer

GreenClean Granular Algaecide GreenClean Granular Algaecide GreenClean Granular Algaecide GreenClean Granular Algaecide GreenClean Granular Algaecide
GreenClean Granular 1 lb. GreenClean Granular 2.5 lbs. GreenClean Granular 8 lbs. GreenClean Granular 20 lbs. GreenClean Granular 50 lbs.
Treats Up To: 2,000 gallons 5,000 gallons 16,000 gallons 40,000 gallons 100,000 gallons
EPA Registered
Removes Odors
String Algae
Smaller Water Features
Larger Water Features
GreenCleanFX Liquid Algaecide

GreenCleanFX Liquid Algaecide

Continues to work up to 48 hours after application.

Liquid density is similar to water which allows homogeneous mixing even in deeper waters.

Reduces organic build up and odors.

Breaks down into water and oxygen leaving no toxic residuals.

GreenCleanFX Liquid Algaecide

GreenClean Liquid Bacteria

GreenClean pH UP & DOWN

GreenClean O2+

Technical Details


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Customer Rating 4 out of 5 stars (352) 4 out of 5 stars (1329) 4 out of 5 stars (1106) 4 out of 5 stars (371) 3 out of 5 stars (212) 3 out of 5 stars (39)
Price $17.20 $15.99 $9.65 $24.09 $24.99 $18.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Crushing Deals Amazon.com Nualgi America, Inc. Airmax, Inc.
Material Type Other Plastic Plastic Other Plastic Other

Product description

Size:2.5-Pound

Through the power of oxidation GreenClean Granular Algaecide breaks down algae cells on contact, you can see it working! Its unique organic chemistry immediately begins fighting algae blooms and releasing vital oxygen into the water as it biodegrades. It can be used as a curative or preventative treatment in any water feature, including those that contain fish, plants and other aquatic life. Formulated without the use of harsh chemicals or chlorine you are ensured there won’t be any negative effects to the aquatic ecosystem. GreenClean Granular Algaecide is effective and offers immediate results when eliminating blue, green and string-algae. With an environmentally sound chlorine, copper and phosphate-free formula you can even have confidence using GreenClean Granular Algaecide in water features without circulation systems. For best results, apply in the morning hours of a calm sunny day when water temperatures are warm. Sunlight and higher temperatures will enhance GreenClean Granular activity.


Product information

Size:2.5-Pound

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on July 5, 2017
Size: 2.5-Pound|Verified Purchase
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on June 25, 2013
Size: 8-Pound|Verified Purchase
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on May 16, 2016
Size: 8-Pound|Verified Purchase
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on October 17, 2016
Size: 2.5-Pound|Verified Purchase
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on August 10, 2015
Size: 2.5-Pound|Verified Purchase
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on June 29, 2017
Size: 2.5-Pound|Verified Purchase
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on November 15, 2016
Size: 1-Pound|Verified Purchase
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on August 16, 2017
Size: 8-Pound|Verified Purchase
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