Tunze Osmolator 3 nano (2027 edition)

The Tunze Osmolator 3 nano (2027 edition) is the latest generation of automatic water level controllers, specifically developed for marine aquariums up to approximately 250 liters. With its compact all-in-one design and ho...

The Tunze Osmolator 3 nano (2027 edition) is the latest generation of automatic water level regulators, specifically developed for marine aquariums up to approximately 250 liters. With its compact all-in-one design and high-quality German engineering, this osmolator offers optimal reliability, quiet operation, and unparalleled user-friendliness. A smart investment for every serious aquarist who wants to keep the water level in their aquarium stable without the hassle.

Perfect water level, always and everywhere

The Tunze Osmolator 3 nano ensures that the water level in your aquarium always remains perfectly at the right level. Evaporation is immediately compensated, making fluctuations in salinity and water quality a thing of the past. This is essential for the health of corals, fish, and invertebrates.

• Suitable for aquariums up to 250 liters
• Detection accurate to 0.5 mm
• Sensor works on glass up to 12 mm thick
• Can be safely placed in the filter compartment or on the edge of the aquarium.

Innovative and safe design

The Osmolator 3 nano is equipped with an advanced optical sensor in an Eastman Tritan™ copolyester housing. This material guarantees high impact resistance, maximum transparency, and excellent chemical resistance. Thanks to the discreet status LEDs, operation remains visible at all times, without stimulating unwanted algae growth.

• New sensor housing for extra safety and durability
• Status LEDs with optimized brightness
• The strainer included as standard protects the dosing pump from dirt.

Silent and powerful dosing pump

The integrated Turbelle® High Jet 5030 dosing pump delivers up to 160 liters per hour and pumps water effortlessly up to 3 meters high. Thanks to the 3-phase sine wave motor, operation is whisper-quiet and exceptionally smooth. The pump is equipped with dry-running and blockage protection, ensuring it continues to function reliably for years.

• Maximum head: 3 meters
• Quiet operation thanks to advanced motor technology
• Automatic protection against dry running and blockages

Easy installation, ready to use immediately

The Tunze Osmolator 3 nano comes fully Plug & Play. All necessary parts are included, except for the refill reservoir. Thanks to the magnetic holder and the flexible hose holder, mounting to virtually any aquarium or filter is simple and tool-free.

• Supplied complete with 12V power supply, dosing pump, 3 meters of tubing, magnetic sensor holder, and hose holder
• German-made PU hose: flexible, durable, and kink-free
• Reusable Velcro strips for neat cable management

Made in Germany, five-year warranty

Every Tunze Osmolator 3 nano is manufactured entirely in Germany, with strict quality control on every component. Thanks to the medical-grade power supply and high-quality finish, this product is built to last for years. You receive a standard 5-year warranty, with no registration or fine print.

• Premium German quality
• 5-year full warranty
• Exclusive service, directly from the manufacturer

Technical specifications

• Supply voltage: 100–240 V, 50–60 Hz (output 12 V DC)
• Power during measurement: 0.7 W, during pumping: 5 W
• Ambient temperature: 15–45°C, water temperature: 0–35°C
• Detection accuracy: 0.5 mm
• Suitable for glass up to 12 mm, hose holder up to 22 mm
• Minimum filling opening: 58–75 mm depending on connection

With the Tunze Osmolator 3 nano, you choose certainty and convenience for your marine aquarium. Discover the difference a stable water level makes and enjoy a healthy, lively reef worry-free!