Aquascape® 29318 Signature Series 6000 BioFalls® Filter Mat. This mat is for the Signature Series 6000 BioFalls® Filter. The Aquascape Signature Series 6000 BioFalls® Filter is ideal for filtering ponds up to 6,000 gallons, providing efficient biological and mechanical filtration. Its durable, rotationally molded, rounded polyethylene shape maximizes structural strength while making it easier to camouflage into your landscape.