Newa Gravel Cleaner PGR1000 The Newa PGR-1000 Power Gravel Cleaner is a vacuum cleaner designed to clean the bottom of the aquarium. It simply attaches to the aquarium or technical tank. Then, with the help of the easily maneuverable suction hose, which reaches all parts of the aquarium, the water is sucked into the filter tank to be filtered...