CrystalClear ® AlgaeOff ® for Garden Ponds

Oxygen powered technology to safely and quickly rid Ponds and Waterfalls of algae.


AlgaeOff kills algae on contact….Safely!
Made specifically for Ponds, Water Gardens, Koi Ponds, Fountains, and other Water Features with our without Pond Fish. AlgaeOff is a granular algaecide for Water Gardens & Koi Ponds best used for Planktonic Algae  (String Algae, Bubble Algae, Moss Algae etc).

Typically this kind of algae is found growing on:

  • Pond liners
  • Pond Waterfall Rocks
  • Streambeds
  • Fountain nozzles
  • Pond Pumps
  • Rocks in pond bottom
  • Pond hoses
  • Pond Spitters, fountains, etc

If algae is persistent, or frequent treatments are needed, be sure to:
Test the pH of the pond and adjust as necessary to proper levels, 6.0-7.5
Apply a Barley Bale to the Pond when using AlgaeOff. Once the Barley Bale begins to break down, in 2-3 weeks, algae treatments should become less frequent. 
It is also recommended to test phosphate levels and use a Phosphate Binder if necessary. Phosphate is a major food source for algae. 
The regular use of Beneficial Bacteria (weekly or monthly depending on the pond) will also reduce nutrients available to algae, making algae blooms less frequent.

  •  AlgaeOff® cannot be shipped to Alaska, California, Hawaii, Puerto Rico or Canada.
  • EPA Registration No.: 90185-3-83742

*Sorry, this item cannot ship to Canada

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