XPAQUA Duetto2 ATO

XP Aqua Duetto2 ATO

Overview

The XP Aqua Duetto2 ATO is an ultra-compact, dual-sensor auto top-off system designed to keep your aquarium’s water level stable with minimal effort. Its tiny controller uses a proprietary dual-optical sensor to monitor water height with high precision, while updated programming and circuitry add extra layers of protection against overfilling and sensor failure.

All installation hardware is included, and the magnetic sensor mount makes it easy to position the Duetto2 in your sump or rear chamber. Just plug it in, connect the pump and tubing to your RO/DI reservoir, and the system automatically maintains your set water level—no complicated programming required.

Product Specifications

• Type: Dual-sensor auto top-off (ATO) system

• Water Level Detection:

  • Proprietary dual-optical sensor (primary + secondary)

• Pump: DC ATO pump

  • Max head: 8.2 ft (250 cm)

  • Flow rate: 74 gph (280 lph)

  • Pump cable length: approx. 6 ft (180 cm)

• Power Adapter:

  • Input: 100–240 VAC, 50–60 Hz

  • Output: 12 VDC, ~4.8 W

  • Power cord length: approx. 6 ft (180 cm)

• Controller:

  • Compact controller (approx. 2.2" H × 0.88" W × 1.9" L)

  • Sensor cable length: approx. 6–10 ft, depending on kit version

• Mounting:

  • Magnetic sensor mount

  • Max mounting thickness: 1/2" (12.7 mm)

• Tubing:

  • Inner diameter: ~6.5 mm (≈1/4")

  • Outer diameter: ~9.0 mm

• Use Environment: Freshwater and saltwater aquariums

Key Features

• World’s smallest dual-sensor ATO: Compact design saves space in nano and standard systems.

• Dual optical sensors with QST: Two optical sensors plus Quick Security Technology provide multi-layer overfill protection.

• Plug-and-play setup: No programming or calibration needed—just mount, connect, and plug in.

• Precision control: Maintains stable water levels for consistent salinity and system balance.

• Improved durability: Upgraded circuitry and sensor design for long-term reliability.

• Complete kit included: Controller, dual sensor, DC pump, tubing, siphon break, power supply, and magnetic mount.