An apparatus includes a waste-movement system having a bed-support assembly configured to receive, contain and support an aquarium bed of an aquarium. A vibration-source assembly is configured to be positioned relative to the bed-support assembly. The vibration-source assembly is also configured to selectively generate and transmit vibrational energy to the aquarium bed while the aquarium water is made to flow. This is done in such a way that the gravel of the aquarium bed becomes, at least in part, spaced apart (at least in part) from one another; and the aquarium water, at least in part, moves (at least in part) the liquefied waste and the solid waste through the aquarium bed from a first interior section to a second interior section of the aquarium.