Precise, Reliable Automatic Top Off with Built-In Overflow Protection
- Precise Optical Water Level Monitoring
- Independent Overflow Safety Sensor
- Powerful, Quiet Turbelle High Jet Pump
- Easy Plug & Play Installation
- Standard & Boost Pump Modes
Keeping your aquarium's water level consistent is an important part of maintaining stable salinity and a healthy aquatic environment. The Tunze Osmolator 3 automatically replaces water lost to evaporation, helping maintain consistent salinity levels without the hassle of manually topping off your tank. With highly accurate optical monitoring, multiple layers of overflow protection, and a powerful yet quiet pump, it's a dependable solution for freshwater and saltwater aquariums of virtually any size.
Precise Water Level Monitoring
The Osmolator 3 uses an advanced optical sensor to detect water level changes as small as 0.5 mm, automatically replenishing evaporated water to maintain a consistent level. The sensor is designed to resist interference from bubbles, deposits, and minor scratches, helping ensure reliable operation far into the future.
Multiple Layers of Overflow Protection
An independent thermal safety sensor provides an additional layer of protection by shutting off the pump if the water rises too high. A built-in 10-minute safety timer adds another safeguard, giving you extra peace of mind when your aquarium is unattended.
Powerful, Quiet Pump Performance
The included Turbelle High Jet 5030 pump offers quiet, efficient operation with built-in dry-run and blockage protection. Standard mode provides a maximum pumping height of 9.84 feet, while Boost mode increases that capability to 20.34 feet.
Easy Installation & Everyday Reliability
Designed for plug-and-play setup, the Osmolator 3 comes ready to use without any programming or app connectivity needed. Its compact sensor assembly mounts securely using the included magnetic holder, while the durable, corrosion-resistant components are built to withstand the demands of aquarium use.
Made in Germany and backed by a 5-year manufacturer warranty, the Osmolator 3 delivers the precision, safety, and reliability you need to keep your aquarium topped off with minimal effort.
Specifications
- Model: 3154.006
- Aquarium Type: Freshwater & Saltwater
- Water Level Sensor: Optical
- Sensor Accuracy: 0.5 mm (0.02")
- Backup Safety Sensor: Independent Thermal Sensor
- Safety Timer: 10 Minutes
- Included Pump: Turbelle High Jet 5030
- Maximum Flow Rate (Standard): 42.3 GPH (160 L/h)
- Maximum Flow Rate (Boost): 47.6 GPH (180 L/h)
- Maximum Pumping Height (Standard): 9.84 ft (3 m)
- Maximum Pumping Height (Boost): 20.34 ft (6.2 m)
- Operating Voltage: 12V DC
- Pump Power Consumption: 5–8.5W
- Maximum Sensor Glass Thickness: 0.59" (15 mm)
- Maximum Hose Holder Glass Thickness: 0.87" (22 mm)
- Warranty: 5 Years
What's Included
- Osmolator 3 Controller with Optical and Thermal Safety Sensors
- Turbelle High Jet 5030 Pump
- Magnetic Sensor Holder
- 12V Power Supply
- PU Tubing and Tubing Connector
- Hose Holder
- Reusable Hook-and-Loop Cable Straps
| SKU | 257673 |
|---|---|
| UPC | 4025167737008 |
| Manuals | Tunze Osmolator 3 Manual |
| Aquarium Type | Saltwater, Freshwater |
| Apex Compatible | No |
| Max Tank Thickness | 15mm / 0.59in. (≈19/32") |
| Included Mounting | Magnetic, Hang On/Bracket |
| Control Type | Preset Plug & Play (No Controls) |
| Pump Included | Yes |
| Pump Model | Turbelle High Jet 5030 |
| Pump Rotor Type | Impeller |
| Flow Rate | 42.3 GPH (Standard), 47.6 GPH (Boost) |
| Tubing Length | 9.8 Feet (3m) |
| Power Type | DC |
| Power Consumption | 0.7W (Monitoring), 5-8.5W (Pumping) |
| Warranty | 5-Year Manufacturer Warranty |
| Water Level Detection | Optical Sensor |
| Safety Features | Overflow Timer, Run-Dry Protection |
| Max Head Height | 5 -10 Feet, Over 20 Feet |

















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