The Tunze Nano Osmolator 3152 is an economical aquarium top off with more features than are typically found on competing units.

The Tunze Nano Osmolator is great for nano aquariums and tanks up to 55 gallons. Featuring a safe low voltage construction, it includes a metering pump, 3 meters of tubing, magnet holder for aquariums up to 10 mm (0.39\") thick, power supply a float switch, protective shield and control unit.

For safety purposes, the Osmolator 3152 includes a processor-based anti-overfill system which turns the pump off after five minutes of filling if the level has still not been reached (equal to a pumping of approximately 0.75 gallons).

The Tunze Nano Osmolator 3152 was built in Germany and includes a 2-year manufacturer warranty that excludes the float switch—which features a 6-month manufacturer warranty and is user replaceable.

For larger aquariums, check out the Tunze Osmolator Universal 3155. If you need a container to hold your top off water, the Tunze Osmolator Storage Container 5002.25 is an ideal choice.

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