Tunze German Engineered Auto Top off Water level controller with only one sensor for nano aquariums or small aquariums with up to 200 liters (55 USgal.). Can be installed in a cabinet filter or directly on the aquarium edge. ready for installation with:
12 V power supply,
low-voltage metering pump,
3 m (118") hose,
magnet holder for up to 10 mm (3/8") glass thickness
