How to Kill Algae in a Freshwater Pond

Pond algae, particularly in freshwater ponds, are a major problem and an inevitable obstacle that most pond owners will have to face. There are two distinct options for killing pond algae; one being chemicals and the other being a more organic solution. For safety's sake, the organic solution is the way to go and is also far more effective and long lasting.

Things You'll Need

  • Barley straw
  • Mesh bag
  • Rubber band
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Instructions

    • 1

      Fill the mesh bag with a handful of barley straw.

    • 2

      Close the bag and tie it shut tightly using the rubber band.

    • 3

      Place the bag of barley either in the center of the pond or in an area of high water flow. Upon decomposition, the barley will release chemicals which kill algae.