Patent ID: 6276302
Filing Date: 2001-08-21
Classification: A01K

Abstract:
An aquarium comprising:a) a container having a height, a length and a depth, the container forming;(i) a main cavity inside the container for containing water and live underwater creatures, the main cavity having a first volume;(ii) a bottom cavity inside the container below the main cavity, the bottom cavity containing water and having a second volume substantially less than the first volume;b) a dividing plate separating the main cavity from the bottom cavity, the dividing plate providing a barrier against fluid communication between the main cavity and the bottom cavity along all but a small fraction of the length and depth of the container, the dividing plate providing limited fluid communication between the main cavity and the bottom cavity in locations extending along at least a substantial part of the length of the container, and the dividing plate providing a narrow gap between the dividing plate and a wall of the container for the fluid communication between the main cavity and the bottom cavity; andc) a filtration system being in fluid communication with the bottom cavity for intake of polluted water, the filtration system also being in fluid communication with the main cavity for outgo of purified water after the polluted water has been purified by the filtration system.