Patent ID: 7329350

Claim:
A water filtration system for a fish pond containing water and one or more fish living in the water, the system comprising: a container comprising at least one opening for receiving water from the fish pond, the container configured to contain about 15 to 150 liters of water; a plurality of filter media disposed in the container, wherein the filter media are treated to attract waste material from the received water; and an impeller mounted in an opening on a side surface of the container to force movement of the received water within the container so that the water within the container flows in a non-repeating pattern such that contact between the filter media and the received water are increased and an efficiency of attracting waste material from the received water is increased, wherein the impeller does not introduce water into the container; an output tubing connected to an output opening of the container, wherein the output tubing receives water from the container and guides the water from the container back to the fish pond.