An aquarium cleaning device having an inner component with a plate employing a cleaning surface and an alternative cleaning element operative on a second surface opposite the cleaning surface. A magnetic element is carried by the plate and means for providing orienting buoyancy is carried adjacent one end of the plate. An outer component has a body with a surface for engaging the exterior of an aquarium wall. A second magnetic element is carried by the body such that the body is positionable for magnetic attraction between the magnetic elements with the cleaning surface adjacent the aquarium wall or with the second surface adjacent the aquarium wall. By moving the body between the first and second positions, the inner component is flipped within the aquarium to alternate the cleaning elements.