Patent ID: 7033491

Claim:
An aquarium filter including a box, a submerged pump and multiple bio-filtration balls; the box roughly in the shape of a triangle, a lower lateral partition being disposed near a base plate of the box; a drainage area being defined between the lower lateral partition and the base plate; the drainage area connecting through the aquarium with multiple holes; multiple vertical partitions segregating the space above the lower lateral partition into a water inlet tank at center, a water collection tank on the corner and multiple filtration tanks; multiple holes being disposed on the lower lateral partition at the bottom of each filtration tank to connect through the drainage area; multiple bio-filtration balls each comprised of a hollow sphere containing a filter being placed in each filtration tank; the water inlet tank connecting through the aquarium with multiple holes; an upper lateral partition with a knocked-off corner covering up the water inlet tank and each filtration tank; a through hole being disposed on the upper lateral partition in relation to the water inlet tank; multiple holes being disposed on the upper lateral partition at where in relation to each filtration tank; a water pumping pipe extending from the submerged pump into the water inlet tank via the trough hole in the upper lateral partition; a water outlet pipe extending from the submerged pump into the water collection tank; an air inlet pipe being connected to the water outlet pipe; a lid covering up an opening at the top of the box; and a gap permitting the air inlet pipe and a power cable from the submerged pump to reach out of the box before being sealed.