Aquatop's Pisces All-in-One Series of Nano Glass Aquariums offer a variety of sleek, modern designs. The PCS-5GC is a modern Cube-style aquarium held together with high-grade unobtrusive silicone. Each unit includes an innovative and unique multi-stage internal filter box system which comes complete with a submersible pump and an easy-change drop-in filter cartridge filled with premium activated carbon. In addition to the Mechanical and Chemical filtration, the Pisces Nano Aquariums also include a drop-in Bio-plate and ceramic rings for superb Biological Filtration. All models include a super bright touch sensitive LED Light complete with a moonlight setting, and a tank lid with mounting clips. These space-saving desktop aquariums are perfect for fresh or saltwater set-ups.