Make a Homemade Pond Filter

A Cheap Solution for Green Pond Water!

Cleaning out a garden pond can be time consuming, and even expensive if the pond is large and has to be cleaned on a regular basis.
A homemade pond filter is one solution to a dark and algae affected pond.

This can be done very simply with a few materials at very little cost. Adopting a method of regulating the impurities that get into a garden pond without affecting the ecosystem is certainly worth the effort.

Building a Homemade Pond Filter

This diy pond filter is designed to be set at a higher level than the actual pond, and work via a water pump that drags the water from the pond to the filter, which in turn becomes filtered cleaner water that travels down a slope back to the pond.

Build Your Own Pond Filter!

This construction is for a waterfall type feature to the pond. So you will need to make your waterfall according to your desire before building a homemade pond filter. Give enough room at the top to hide a 5 gallon bucket.

  • 2 x Plastic 5 Gallon Buckets
  • 1 x Roll of Pond Filter Media (Cost approx $25 for 90’x12”x1”)
  • 1 x 5 lb Bag of Washed Aquarium Gravel
  • 1 x 5 lb Bag of Medium Sized Smooth Pebbles
  • 1 x 5 lb Bag of Washed Clean Sand
  • 1 x Hose Pipe (Length depend on your pond size and drop from filter to pond)
  • 1 X PVC Bulkhead Hose Pipe Connector (Male)
  • 1 x Aquarium Seal Glue
  • 1 x Cloth Bag and Tie (One that will fit tightly in the bottom of your bucket)
  • 1 x Pond Water Pump (One that will be compatible with a standard garden hose)
  • Construction

    Measure the length of the drop to your pond from the area you will be placing the filter. A good idea is a waterfall feature that will bury the water filter at the top of an angled drop to the pond.

    To build your pond filter (which should be effective on ponds up to 5000 gallons) you will need to first drill a hole at the bottom of bucket (A) to the dimensions of the PVC Bulkhead hosepipe connector (Allow 1/2 inch from the bottom). Then seal the bulkhead with the Aquarium Glue on both sides of the fitting so that it is water tight, and allow 24 hours to set.Once the glue has set place the cotton bag inside bucket B and fill the bag with a 5” layer of sand, then tie the bag to seal. If you have done this correctly the bag should fit perfectly to the inside of bucket A.

    Drill several holes in the second bucket (B) neatly round the bottom about 2 inches apart, making 3 rows from the middle.

    Place inside bucket B a couple of layers of smooth pebbles (approximately 4 inches deep) and a 1 inch deep layer of Aquarium Gravel.

    Then place inside bucket B a good 12 feet of the Pond Filter Media rolled up. This should fit tightly to the edge of the bucket and be rolled tight to the middle, so if you need more than 12 feet of media - use more.

    Place Bucket B inside Bucket A. There should be a sealed fit so if not reduce the amount of sand accordingly.

    Attach a measured length of garden hose from the pond pump to the top of your waterfall feature and the PVC bulkhead and attach. (You will need to hide this within the water feature).Start the pump and if all goes well and you have constructed your filter correctly, bucket A will start to take water and slowly fill bucket b. This will in turn allow water that has been filtered to flow over the top.

    Remember to set the pond filter at an angle towards the pond, so that filtered water runs toward the pond and not elsewhere.

    Reduce the pressure accordingly on your pond pump to even the flow of water to the filter.

    That is how easy it is to make a homemade pond filter. You can have fun with the design of your water feature to incorporate this water filter as this method is very versatile. Leave Homemade Pond Filter, Return To Building Garden Ponds Homepage