Tunze Osmolator Auto Top Off

TUNZE Osmolator 3 Nano, Osmolator 3 & Replacement Pumps

TUNZE Osmolator systems provide reliable automatic top-off control to maintain a consistent aquarium water level. Maintaining a stable water level is especially important in saltwater aquariums, where evaporation can otherwise cause fluctuations in salinity.

Available in the compact Osmolator 3 Nano or the more advanced Osmolator 3, both systems are designed for simple installation and dependable operation without complicated programming.

Osmolator 3 Nano

The Osmolator 3 Nano is a simple automatic top-off system designed for aquariums up to approximately 250 L / 66 gallons. It uses a single water-level sensor and can be installed in a sump or directly on the aquarium.

Specifications

• Recommended Aquarium Size: Up to 250 L / 66 gal

• Max Glass Thickness: 12 mm / 0.5"

• Hose Holder Capacity: Up to 22 mm / 0.87"

• Hose Length: 3 m

• Power: 12V

Includes: Water-level sensor • Low-voltage dosing pump • 12V power supply • 3 m hose • Hose holder • Magnetic mount • Sensor protective cover

Osmolator 3

The Osmolator 3 features a precise optical water-level sensor and an independent thermal safety sensor for additional overflow protection.

The optical sensor measures water level with approximately 0.5 mm accuracy and is designed to resist interference from air bubbles, deposits and scratches. If an overfill condition occurs, the independent safety sensor stops the pump.

The system is completely Plug & Play, with no software setup required.

Specifications

• Water-Level Accuracy: 0.5 mm

• Max Glass Thickness: 15 mm / 0.59"

• Hose Holder Capacity: Up to 22 mm / 0.87"

• Power: 12V DC

Includes: Osmolator 3 sensors • Turbelle High Jet Pump • Magnetic mount • 12V power supply • Hose • Hose holder

Turbelle High Jet Replacement Pump

The Turbelle High Jet 5000 is a high-performance replacement pump for older TUNZE Osmolator systems, including the Osmolator Nano 3152 and Osmolator 3155.

Its compact 12V DC design provides significantly higher head pressure while remaining quiet and durable. It can be operated submerged or externally and uses 6 mm PU tubing.

Specifications

• Dimensions: 78 × 41 × 41 mm / 3.1" × 1.6" × 1.6"

• Tubing: 6 mm / 0.24"

• Max Head: 6.2 m / 20.3 ft

• Power: 12V DC

Flow

• 1.0 m: 120 L/h / 31.7 GPH

• 1.5 m: 100 L/h / 26.4 GPH

• 2.0 m: 83 L/h / 21.9 GPH

Original Osmolator Metering Pump Replacement

Replacement low-voltage dosing pump for compatible TUNZE Osmolator systems. Operates at 3–12V DC and uses 4 mm / 0.2" tubing.

Specifications

• Voltage: 3–12V DC

• Tubing: 4 mm / 0.2"

• Max Head: 3.6 m / 11.8 ft

Flow at 12V

• 0.9 m: 100 L/h / 26.4 GPH

• 1.4 m: 80 L/h / 21.1 GPH

• 1.9 m: 58 L/h / 15.3 GPH

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