Patent ID: 7506612

Claim:
An aquarium cleaning device comprising: an inner component having a plate with a cleaning surface, a first magnetic element carried by the plate, a first polarity of the magnetic element fixed for association with the cleaning surface; an alternative cleaning element selected from the set of a scraper and an abrasive cleaning surface operative on a second surface of the plate opposite the cleaning surface and associated with a second polarity of the magnetic element, and an outer component having a body with a surface for engaging an exterior surface of an aquarium wall, and a second magnetic element carried by the body; the body positionable in a first position for magnetic attraction between the first polarity of the first magnetic element and the second magnetic element with the cleaning surface adjacent the aquarium wall and removably positionable in a second position for initial magnetic repulsion followed by magnetic attraction between the second polarity of the first magnetic element and the second magnetic element with the second surface adjacent the aquarium wall, moving the body between said first and second positions sequentially causing orientation of the first and second magnetic elements for repulsive force to flip the inner component within the aquarium then attractive force to draw the inner component to the wall.