Homemade Galvanized Pond

Galvanized steel is steel that has been coated in zinc. Zinc is a potentially toxic metal for fish and invertebrates, and as such, you must coat a homemade galvanized pond prior to filling it with water. Galvanized steel will not rust, so if it is sealed properly, it can make an excellent rigid form for a homemade pond.

Garden ponds make excellent water features and improve the aesthetics of any yard.
  1. Line your galvanized steel basin or pot with pond liner to prevent water from coming in contact with the galvanized, or zinc-coated, steel. Zinc can be a hazardous metal for fish, and can also harm some aquatic plants. Use a large enough piece of a vinyl pond liner to line the entire galvanized steel container, and overlap over the lip of the container 2 to 3 inches.
  2. Clamp the liner to the galvanized steel container's lip using spring clamps or a length of cordage wrapped around the circumference of the container in such a way as to hold the overlapping liner against the outer wall of the container.
  3. Fill your lined galvanized steel container with water. Use filtered water, or water captured from a rain barrel, if you intend to place fish in your pond. Fish can be extremely sensitive to chlorine, so using a water source that is not chlorinated is ideal. If you must use municipal chlorinated water, purchase dechlorinating treatment from a pond supply store.
  4. Place your pond pump in the center of your galvanized steel pond. In order to keep algae and insects to a minimum, and provide oxygen for any fish you keep in your pond, you need to use a pump. Set your submersible pond pump up with a small fountain spigot that sprays water back in to your pond. This will keep the water cycling, preventing the accumulation of algae while increasing the amount of dissolved oxygen in the water.
  5. Place your aquatic plants and fish in your pond. The more plants you can cover the surface of the pond with, the less of an algae problem you will have. When purchasing fish, ask about the specific space requirements for the species you have selected. Some species require as much as 10 gallons per inch of fish, meaning if you bought three 2-inch fish, you would need a pond that was at least 60 gallons.

Things You Will Need

  • Vinyl pond liner
  • Submersible pond pump
  • Aquatic plants


  • Keep your pond shaded. The less sunlight falls on the water, the less algae you will have.

About the Author

Andrew Leahey has been a writer since 1999, covering topics as varied as technology how-to guides and the politics of genetically modified organisms to African food supplies. He is pursuing his J.D. while renovating an 1887 farmhouse located in the New Jersey Pine Barrens.

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