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Tunze

Osmolator 3 Nano Auto Top Off

In stock
Out of stock
SKU
255603
$129.99 $129.99

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Precision Water Management with the Tunze Osmolator 3155

  • Designed to Ensure Perfect Water Levels
  • Redundant Protection Against Overfilling
  • Visual and Audible Alarms for any Irregularities
  • Strong Magnetic Mounts for a Secure Hold

 

Gone are the days of manual water top-offs. Experience hassle-free water level management with the Tunze Osmolator 3155. This time tested system ensures that maintaining perfect water levels is a seamless experience. It integrates an optical sensor with a float switch, offering not only reliability, but also redundancy to protect against overfilling the aquarium.

The optical sensor acts as the primary water level sensor, while the float switch is the backup. If water triggers the float switch, power is cut to the pump and an audible and visual alarm is triggered. In addition, there is a built-in maximum run time of 10 minutes that can also cut the pump's power. This can not only help prevent an overflow, but can also protect the pump if the auto top off reservoir has run dry.

 

Specifications:

Max Head Height: 7.0 ft

Tubing Diameter: 7mm OD | 4mm ID

Tubing Length: 3 Meters

Magnetic Holder: Suitable for sensors up to 10mm or 3/8"

 

For those with requirements for a higher head pressure pump, consider Tunze's Turbelle High Jet Pump as an ideal replacement for the stock osmolator pump.

 

What's Included?

Water Level Controller 5017 w/ Optical Eye & Float Switch

Low Voltage Pump

Power Supply

3-Meter Tubing

Magnetic Mounts

Protective Cover

More Information
SKU 255603
UPC 4025167484001
Aquarium Type Saltwater, Freshwater
Max Tank Thickness 1/2 in.
Included Mounting Magnetic
Control Type Preset Plug & Play (No Controls)
Pump Included Yes
Pump Model Tunze 5000.020 Metering Pump
Power Type DC
Warranty 5-Year Manufacturer Warranty
Water Level Detection Optical Sensor
Safety Features Run-Dry Protection
Max Head Height Over 20 Feet
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Product Questions

how long is the hose, my reservoir is far from my tank
Question by: totu on Apr 20, 2025, 8:39 PM
There is about 9 feet of hose included.
Answer by: Grace (BRS Staff) on Apr 22, 2025, 11:31 AM
What is the footprint of the optical disc? Ie. diameter is ?”
Question by: Matt Heite on Feb 11, 2025, 1:15 AM
The sensor is about 2.5" in diameter.
Answer by: JJ K (BRS Staff) on Apr 5, 2025, 1:42 PM
I have a 60 gallon aquarium would this be a good auto top off
Question by: Magnuss Mendiola on Dec 27, 2024, 3:37 PM
It would be a good top off, it is recommended for Tanks up to 66 Gallons.
Answer by: Grace (BRS Staff) on Dec 27, 2024, 3:46 PM