The TUNZE® Osmolator® 3 and Osmolator® 3 nano are compact, plug & play automatic top-off systems designed to maintain stable water levels in freshwater and marine aquariums. Both models ensure precise, safe operation with key differences in capacity and sensor design to suit varying aquarium sizes. The Osmolator® 3 is ideal for larger tanks and includes a dual-sensor system—a high-precision optical sensor and an independent thermal safety sensor. This configuration offers 0.5 mm water level accuracy and full overflow protection. It includes the high-performance Turbelle® High Jet 5030 dosing pump with dry-run and blockage protection, capable of a delivery height up to 6.2 m. The system supports glass thickness up to 15 mm and comes with a kink-resistant PU hose, 12V DC medical-grade power supply, and push-in hose connector. The Osmolator® 3 nano is tailored for aquariums up to 250 litres. It uses a single optical sensor for 0.5 mm accuracy and includes the same reliable Turbelle® High Jet 5030 pump with 3 m delivery height. It’s quick to install and includes a 12V power supply, 3 m hose, magnet holder (up to 12 mm glass), and sensor protection cover. Key Features: Accurate auto top-off systems for fresh and saltwater aquariums Osmolator® 3: Dual sensors (optical + thermal safety) Osmolator® 3 nano: Single optical sensor (up to 250L tanks) 0.5 mm sensor accuracy – unaffected by bubbles or debris Quiet, efficient Turbelle® High Jet 5030 dosing pump included Plug & play setup – no software configuration required Kink-resistant PU hose with push-in connector (standard on Osmolator® 3) Mounting options for glass up to 15 mm (Osmolator® 3) or 12 mm (Nano) Tube holder compatible with rims up to 22 mm Made in Germany with 5-year warranty Whether you're maintaining a compact reef tank or a larger marine system, the Osmolator® 3 range provides dependable, precise top-off control to keep salinity stable and water levels consistent—without the hassle of manual refills. Specifications: Osmolator® 3 nano: For aquariums up to 250 litres Sensor accuracy: ±0.5 mm Glass compatibility: up to 12 mm Pump delivery height: up to 3 m Includes: 12V power supply, 3 m hose, magnet holder, sensor cover Osmolator® 3: For freshwater and seawater systems Sensor accuracy: ±0.5 mm Glass compatibility: up to 15 mm Pump delivery height: up to 6.2 m Includes: 12V SELV power supply, PU hose, hose connector, dual sensors
