An aquarium system is disclosed. The aquarium system (100) comprises a primary chamber (102) and a secondary chamber (104), where at least a portion of the secondary chamber (104) is located at the operative bottom of the primary chamber (102). A perforated barrier (108) is positioned between the primary chamber and the portion of the secondary chamber (104) located at the operative bottom of the primary chamber to allow limited fluid communication thereto. An oblique plate (110) is provided in the secondary chamber (104) to form a catchment basin (112). The waste are collected in the catchment basin (112), which can be easily and efficiently removed. The system (100) is fish-friendly, and maintains the water quality, prevents clouding or poisoning of the water, without the use of a filtration system, for a period as long as 4 to 6 months.
