- Compact three-function pump for nano tanks: pumping, aeration and circulation with quiet operation. - Filter designed for small fish tanks with a maximum working depth of 17 cm; small, elegant design that blends with compact aquariums. - Degreasing film feature helps remove oil film and impurities on the water surface during filtration, keeping the filter cleaner. - Bottom filter basket prevents small fish from accidentally entering the pump during operation. - Four strong suction cups attach securely to the tank side wall; stable for long-term use and easy to install or remove. - Use scenario 1: desktop nano tanks up to 17 cm deep with betta, shrimp, or small community setups; provides gentle filtration, circulation and surface oxygenation without crowding the space. - Use scenario 2: fry or quarantine tanks requiring reliable, gentle filtration and surface film control to improve visibility and water quality. - Use scenario 3: small planted tanks that need continuous filtration while maintaining a clean water surface and unobtrusive appearance.