Q:

How do you build a pond filter?

A:

Quick Answer

Build a pond filter by placing filter material in a plastic crate along with some lava rocks. Always use biodegradable filter material in a pond filter.

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Full Answer

This pond filter is easy to make and is lightweight. It will serve a pond of up to 1,400 gallons and may be used all year.

  1. Gather the supplies
  2. For this filter, get a plastic crate, blue or green biodegradable air conditioner filter material, a large aquarium pump and a bag of lava rock.

  3. Cut the filter material
  4. Cut the material to fit the inside of the crate. The filter material should fit along each side and the top and bottom. The bottom piece should be slightly smaller than the top piece.

  5. Rinse the pieces
  6. After cutting, rinse the filter pieces to remove any dust. Rinse the lava rock to remove any dust as well.

  7. Place the air filter material
  8. Place the air filter material along the sides and bottom of the crate. Cover the bottom with a layer of rinsed lava rock.

  9. Cut space for the pump
  10. Using a pair of sharp scissors, cut a small hole just large enough for the cord and discharge hose of the air pump. Place the pump at the bottom of the crate, on top of the lava rock.

  11. Set up the pump
  12. Set up the pump by pulling the discharge hose and cord through the holes. Fill the crate the rest of the way up with lava rock, covering the pump.

  13. Cover the crate
  14. Place the top piece of filter material on the crate, making sure it fits snugly at the top. Lower the filter into the pond.

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