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GreenClean Granular Algaecide

Item #: GC20
OUR PRICE: $135.00
Greenclean Granular Algaecide - 20 lb. pail

EPA registered, non-copper algaecide that works on contact to control a broad spectrum of algae that is completely biodegradable.


  • Works through oxidation to provide fast results even on the toughest algae strains
  • No harm to fish or environment when used at recommended rates, no water use restrictions
  • Organic certified by OMRI (Organic Materials Review Institute)
  • Algae can be killed within 24 - 48 hours of application, starts working in minutes
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5.0 Based on 2 Reviews
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Janet L.
United States United States
Algae gone

It took 3 applications over a couple of months, but our pond is now free of the string algae that was such a problem.

Glenn P.
United States United States
Granular Algaecide

I am waiting to find some type of instructions- like what is the rate I should use. I have found nothing- nothing in or on the container. Hate to just guess and by-golly. Maybe to much maybe to little the rate should effect the success of the product. I cannot believe on can produce something like this without including some idea as to the rate.