The Hagen Marina Internal aquarium filters provide powerful filtering systems in a compact design for any goldfish or tropical fish tank. They provide a complete filtration of mechanical, biological and chemical, due to the uniquely designed Power Cartridge. The inside chambers contain carbon which removes odours and pollutants, while the outside features a polyester foam to trap fine particles. The large surface area of the Bio-Screen promotes the growth of friendly bacteria. Together the sections of the Marina Internal Filters provide you with a cleaner and healthier aquarium environment with crystal clear water....
