Patent ID: 6709574
Filing Date: 2004-03-23
Classification: A01K,B01J,C02F,C05F,Y02A,Y02W,Y10S

Abstract:
A system for filtering and cleaning the water of a fish pond, the system comprising:a plurality of filter media, wherein the filter media are provided with a plurality of external protuberances and a plurality of internal dividing structures configured to provide a surface for the advantageous growth of heterotrophic bacteria and to retain waste material; a container enclosing the plurality of filter media wherein the filter media comprises a plurality of sizes which mix randomly in a single bed within the container; a pumping device connected to supply water from a fish pond into the container and return the water to the fish pond after the water has passed through the filter media; a valve apparatus connected to the pumping device and the container to selectively pass or restrict water flow from the pump into the container and out of the container through a plurality of exit ports; and a screen positioned within the container and attached to the valve apparatus to restrict the filter media from being carried out of the container by water exiting the container.