Official Aqua One 102s Black Sponge Pad for use with Xpression 17, Xpression 21 and Xpression 27, Series aquariums from Aqua One. The 102s may be rinsed in discarded aquarium water and reused. Replace every 12 months as the cell structure starts to deteriorate.
Official Aqua One 102i Impeller for use with Xpression Series. Filter Pump Impellers work extremely hard, spinning tens thousands of times a day, every day of the year, so we recommend replacing this hard working component every 12 months.