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.