Abstract: A method of decorating an aquarium comprising the steps of: creating a décor assembly, where the décor assembly includes a background screen and said background screen includes a front side, a rear side with a magnetic lining on the rear side; submerging the décor assembly into the aquarium; and aligning a plurality of magnets along the magnetic lining, where the plurality of magnets are positioned on an outside surface of the aquarium. In one particular embodiment, the step of creating a décor assembly includes permanently attaching an environmental décor to the background screen, where the environmental décor includes at least one of a plant décor and a dwelling décor.