1. A recirculating media filter is a method of pretreatment that provides aerobic treatment of wastewater. The wastewater is generally pumped from a pump/recirculation tank, dispersed over a media bed, and allowed to drain back into the tank. The wastewater is aerated as it flows over the media. The media is constructed from a variety of plastics, textile, stone, or redwood laths into a number of shapes (honeycomb blocks, rings, cylinders, etc.). A biological film grown on the media feeds on the contaminants contained in the wastewater. As the film establishes and grows, it will exceed the ability to hold onto the media. The biological materials slough off and return to the pump/recirculating tank with the wastewater for further decomposition.