WF18E ECO-Series® Sonata Filter


Sonata filter – for ponds up to 1800 gallons.

ECO-Series biological waterfall filters help keep ponds clean and clear while supplying an ideal base for waterfalls and streams. Pond water flows up through filter pads and filter media with high surface area allowing suspended debris to be trapped and beneficial bacteria to provide natural biological filtration.
Patented “Spliner Lock” system attaches liner securely and easily – no bolts, no silicone – no puncturing the liner.


WF18E ECO-Series® Sonata Filter

These patented waterfall filter boxes are the easiest to install of any similar style filter on the market today

  • Inlet bulk head fittings are pre-installed
  • Biological filter media is included
  • Easy, tool-free liner attachment
  • An excellent choice for the “do it yourselfer” with an easy, user friendly installation process

Sonata Filter includes:

  • Filter box with “Spliner Lock” system
  • Two filter pads
  • Two bags of Bio-Blox media (two cubic feet)
  • One 1 1/2″ PVC male adapter.
  • Optional lid sold separately – part # WF18L

Additional Information

  • Max Flow Rate 50gpm/3000gph
  • Dimensions 22"L x 25"W x 21"H
  • Pond Size 1800 gallons
  • Inlet 1 1/2"
  • Waterfall Opening 18"
  • Weight 23
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