Patent ID: 7931801

Claim:
An aquarium filter system being provided in an aquarium, and comprising: a base, laid flat on a bottom surface of said aquarium, said base being a hollow board of which an upper surface plate has a plurality of holes, interior of said hollow board being filled with filtering cotton; a filtering cylinder mounted to be perpendicular to said base, and having an outer housing unit, and being provided on its inner bottom layer with a pump unit, further being provided at an outlet on one side of it in opposition to said pump unit with a water discharging hole which is operated with a pushing plate provided on an outer wall of said filtering cylinder to optionally open or close; an inner middle layer of said outer housing unit being provided sequentially upwards from below with a filtering box and a garbage collecting board, said garbage collecting board being provided with a plurality of through holes for flowing therethrough of water, and said filtering cylinder being provided on its front and back sides above said garbage collecting board with a plurality of grid holes for flowing in of water, an interior upper layer of said outer housing unit having a closed cover; and more, said filtering cylinder being provided on an inner side in opposition to said outlet of said pump unit with a upright chimney unit which extends to an uppermost layer of said filtering cylinder; an electric power line extending to said filtering cylinder to provide electric power; and, an air pipe extending from outside of said aquarium to have its end connected to an air inlet of said pump unit, and to have its other end provided with an air conditioning valve; when said pushing plate closes said water discharging hole, said air conditioning valve opens, then said pump unit pumps air into water to form air bubbles in said chimney unit of said filtering cylinder to be led up into said uppermost layer to change toxic material in water into bubbles which are floated upwards to be collected and filtered on said garbage collecting board, and then water being filtered passes said base and flows into said aquarium; when said pushing plate opens said water discharging hole, said air conditioning valve closes, then said pump unit generates forceful water jet spraying from said water discharging hole to said upper surface plate of said base to create vortex.