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Auto Aqua Smart ATO Nano


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Auto Aqua Smart ATO Nano


The Smart ATO Nano Kit is a plug-and-play auto top-off system made by Autoaqua. Specifically designed for nano and pico aquariums under 50 gallons, this ATO nano kit will automatically monitor and refill evaporated water in small tanks. It will also help keep a stable osmotic balance for saltwater applications, which is particularly important for small tanks that are sensitive to continuous salt concentration fluctuations.

The Smart ATO Nano is beautifully crafted to allow simple installation and silent operation. A strong diaphragm pump and a dual optical sensor are combined in one pack, avoiding an unwanted nest of wires.


Smart ATO Nano uses QST for real-time protection against product malfunctions such as overflowing or an empty reservoir resulting in the pump running dry. In addition, the system’s controller will give a visual alert the minute it detects unusual behavior for a device.


Power Input: 100-240 VAC 50-60Hz
Diaphragm Pump: Suction Head: 6.5 feet (200 cm)
Flow Rate: 7.9 gph (30 lph)
Anti-siphon Pressure: 2 feet (60 cm)
Mounting Thickness: Sensor: Max. 1/2 inch (12.7 mm)
Holder: 0.12-0.39 inch (3-10 mm)
Cable Length: Sensor: 1.5 feet (45 cm)
Power Supply: 6 feet (180 cm)
Tubing: Length: 6.5 feet (200 cm)
ID: 5/32 inch (4 mm) / OD: 1/4 inch (6.4 mm)


Smart ATO Nano Controller

The controller includes a dual sensor and a diaphragm pump. Device includes storage space for extra, unneeded wires allowing for a clean look.

Durable and Reusable Prefilter

Its ingenious and unique design helps filter all the dirt and contaminants from the reservoir. Furthermore, the user-friendly design of the prefilter makes for simple installation and maintenance. Its crystal-clear body allows users to check its cleanness quickly. In addition, the o-ring inside it enables it to work well under high pressure. Another critical feature of this prefilter is that it can be quickly disassembled for easy maintenance.

Universal Power Adapter.
  • Input: 100-240V ~ 50-60Hz
  • Output: 12V/1A
The Anti-Siphon Valve
Used to stop a back siphon and handles forward siphon pressure up to 2 feet (60 cm) of water.6.5 feet (200cm) Tubing
To be used with diaphragm pump, prefilter, and anti-siphon valve. Tubing I.D.: 5/32 inch (4 mm) O. D.: 1/4 inch (6.4 mm)
All-in-One & Compact Design
Installing the Smart ATO Nano on an aquarium is straightforward and effortless. Simply hang it on the wall of the tank/sump, connect tubing, and plug in the power supply. The multiple-position installation ‘hang-on back’ design is convenient and flexible for rimmed and rimless reservoirs. In addition, the easy-to-install magnetic dual sensor can be positioned at any desired place. Adjustable holder fitted for 3-10 mm aquarium glass thickness.
Quick Disassembly Without Any Screws
The tool-less design allows for the device to easily assemble or disassemble in minutes. No screws mean there is no risk of pollution caused by rust in the tank!

Simple Installation

Adjustable sensor cable makes for a tidy installation. Hide the unneeded cable in the storage space located in the body.
There are two holes on the cover for fixing the inlet tubing for more flexible installation.
Silent Diaphragm Pump

The built-in DC diaphragm pump provides silent operation, great efficiency, and a precise fill volume of water, which  is ideal for small aquariums.Diaphragm Pump Specifications:

  • Max Suction Head: 6.5ft (200cm)
  • Max Flow Rate: 7.9gph (30lph)


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