Patent ID: 7638044

Claim:
A filter housing arrangement, comprising: a) a main filter housing portion defining an interior filtering chamber, the main filter housing portion having a top, a rounded bottom, and opposing first and second sides, the top defining an opening for receiving a filter cartridge, the rounded bottom defining a single radius that extends from the first side of the main filter housing portion to the second side; and b) a housing input that directs water from an aquarium into the interior filtering chamber of the main filter housing portion, the housing input defining a chamber entrance in fluid communication with the interior filtering chamber; c) wherein incoming water flows through the housing input in a first direction generally parallel to the first side of the main filter housing and then through the chamber entrance into the interior filtering chamber in a direction from the first side of the main filter housing portion to the second side such that the incoming water sweeps across the rounded bottom of the main filter housing portion.