How to Get Rid of Algae in Ponds


Two types of algae usually form in ponds, one is string algae the other is plankton algae. Chemical cleaners will work temporarily to clear algae from a pond but are not a permanent solution. There are two options to rid your pond of algae. The first is a natural method that lessens the disturbance to the natural balance of life in your pond. The second method requires that you have the space to remove your aquatic life from your pond.

Natural Cleaning Method

Step 1

Remove debris from the bottom of your pond, skim it from the top of the water as well. A pond skimmer purchased at your local garden center will work for cleaning debris floating on the top. To clean the bottom of the pond will require scooping debris from the bottom. Clean or replace filters.

Step 2

Add aquatic plants such as floating plants, hyacinths and water lilies. Limiting the amount of sunlight the algae receives will reduce the numbers produced. Algae relies on photosynthesis like other plants.

Step 3

Add beneficial bacteria to the water. Contact your local pond supplier, such as a garden center. Bacteria reproduces faster than algae so the increased number of bacteria will deplete available food sources for the algae.

Step 4

Add additional pond aerators to increase the oxygen content of the water. This boosts beneficial bacteria growth and generally keeps your pond life healthy. The beneficial requires oxygen to thrive.

Empty and Clean Method

Step 1

Fill large trash cans with water from the pond. Add aerators to keep the water oxygenated.

Step 2

Add aquatic life to the trash cans. This includes all fish, frogs, snails and plants.

Step 3

Remove heavy debris from the bottom of the pond. Sprinkle the pond liner with Kosher salt. Allow one day to dry.

Step 4

Rinse pond liner with water. Use a hard broom to loosen any stubborn algae.

Step 5

Refill the pond with fresh, clean water. Add neutralizing agent to remove chlorine. Let stand for one day. Return aquatic life to the pond.

Things You'll Need

  • Pond skimmer
  • Aquatic plants
  • Beneficial bacteria
  • Pond aerator
  • Large trash can
  • Small aerator
  • Kosher salt
  • Hard broom
  • Neutralizing agent


  • Absolute Ponds: Algae Control
Keywords: algae control, pond cleaning, pond algae

About this Author

Currently residing in Myrtle Beach, SC, Tammy Curry began writing agricultural and frugal living articles in 2004. Her articles have appeared in the Mid-Atlantic Farm Chronicle and Country Family Magazine. Ms. Curry has also written SEO articles for She holds an associate's degree in science from Jefferson College of Health Sciences.