Tunze 3155 Osmolator

TUNZE Osmolator Universal

Water level regulator with two sensors suitable for use in cabinet filter plants, in Comline filters or directly on the edge of the aquarium.
Scope of delivery: Ready for mounting with power supply unit, metering pump, hose, magnet holder for sensors.
Avail. in US voltage only.  Max head pressure: 13 feet.

High-Tech, just for a reliable water level in your tank

In 1985 TUNZE® invented the “auto top off” system. Critics initially derided the idea as an invention for lazy people… They missed the main point: delicate aquatic life requires a constant osmotic pressure. The Osmolator® - short for Osmotic Regulator - provides this in one easy-to-install complete Kit. Only the Osmolator® provides the level of safety and reliability that comes with 25 years of TUNZE® know how.


An optic operated mini sensor recognizes the water level precisely.

The 5017 displays all functions optically and sounds a signal in case of failures.

New Magnetic Sensor mount, so easy to use!

Redundant security: the main sensor is a proprietary optic sensor. Should that fail a safety float switch shuts the unit off and sounds an alarm. Even if that fails safety circuitry shuts off the pump after 10 minutes.


The Osmolator® will be supplied with low voltage pump, mounting magnets, tubing controller and power supply. You only need a reservoir and water!

More Information
Manufacturer Tunze

Tunze 3155 Osmolator Manual

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