Innovative and Smart ATO for Nano Aquariums 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. Integrated With Quick Security Technology (QST) 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.. 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. Specifications: - 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)