The Biorb 30 Coldwater Aquarium with Halogen Light in Black is a convenient small size & made from high gloss acrylic that is ten times stronger & clearer than glass. This is probably the lowest maintenance tank on the market. It is complete with a comprehensive filter system that is hidden & its special cartridges are disposable monthly. (first cartridge provided) It has an air stone as part of this system & a lovely bubbler which adds character to your tank as well halogen lighting. The set is equipped with ceramic media stones that provide ample space for good bacteria to live on as well as food & a water treatment. The set contains everything that budding fish keeper