OASE BioTec Pond Filters


OASE BioTec Pond Filters

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OASE BioTec Filters are large mult-stage pond filters designed for large fish ponds and ponds with heavier fish load. The first stage of filtration directs the flow into the pond filter into a 300 micron mesh screen which removes course and fine debris from the water to increase biological activity in the next stages. This mesh screen automatically cleans itself every 15 minutes to drastically reduce maintenance and keep the filter operating at peak efficiency.

The biological stage allows the pond water to pass through filter foams that are populated with large colonies of beneficial bacteria to eliminate toxins from the pond water. These filter foams rarely require maintenance, but when necessary, they can be cleaned with a special tool that eliminates the need to remove the foams from the filter.

The Biotec 18000 pond filter's final stage uses Phosless cartridges to bind phosphorous that causes algae growth and remove it from circulation in the pond. These cartridges do need to be replaced from time to time.


  • Mechanical / Biological flow-through design
  • Should be used with Bitron 55C UV Clarifier and Aquamax SF 2200 or 3500 Pump
  • Built-in cleaning system for easy maintenance
  • Tubing adapters & clamps included
  • Three year warranty


SKU Min Flow Max Flow Pond Size (No Fish) Pond Size (Small Fish) Pond Size (Koi) Intake Outlet Filter Pads Compatible with UV Dimensions
50118 1600 GPH 4000 GPH 18000 Gallons 9000 Gallons 4500 Gallons 3/4", 1", 1.25", 1.5" MM 2.76", 3" (with included adaptor ring) 8 Red, 8 Blue Bitron 36 - 110C 31" x 23" x 22"
50119 1600 GPH 7000 GPH 32000 Gallons 16000 Gallons 8000 Gallons 3/4", 1", 1.25", 1.5" MM 2.76", 3" (with included adaptor ring) 18 Red, 18 Blue Bitron 36 - 110C 47" x 32" x 30"
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