Incorporate the P series pumps and C series chambers. They are compact, corrosion-resistant, and metal free, requiring no floor space. If desired, both system types can be mounted outside the tank. Unlike one-piece submerged filtration systems, A-A and A-B filtration systems need not be removed from the tank for cleaning or cartridge change-out. Designed for sealless-free, bearing-free and maintenance-free operation, the chamber cover on single cartridge chambers can be easily removed by hand, and a new replacement cartridge dropped in. The Penguin design incorporates leak-proof filtration with no liquid bypass. All chambers accommodate Penguin PF string-wound or PC carbon filter cartridges.