---
product_id: 517947419
title: "Duetto 2 Dual-Sensor Complete Aquarium Auto Top Off ATO System"
brand: "xp aqua"
price: "1213.45 DT"
currency: TND
in_stock: true
reviews_count: 8
url: https://www.desertcart.tn/products/517947419-duetto-2-dual-sensor-complete-aquarium-auto-top-off-ato
store_origin: TN
region: Tunisia
---

# Dual-optical sensor for pinpoint water level accuracy Magnetic coupling for effortless, tool-free installation Two-layer overfill protection with smart QST programming Duetto 2 Dual-Sensor Complete Aquarium Auto Top Off ATO System

**Brand:** xp aqua
**Price:** 1213.45 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your aquarium flawless with the tiniest titan of water control!

## Quick Answers

- **What is this?** Duetto 2 Dual-Sensor Complete Aquarium Auto Top Off ATO System by xp aqua
- **How much does it cost?** 1213.45 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/517947419-duetto-2-dual-sensor-complete-aquarium-auto-top-off-ato)

## Best For

- xp aqua enthusiasts

## Why This Product

- Trusted xp aqua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Stainless steel and enhanced sensor design for years of worry-free operation.
- • **Space-Savvy Design:** World’s smallest dual-sensor ATO fits sleek, modern aquariums without clutter.
- • **Precision Perfected:** Dual-sensor tech guarantees rock-solid water levels, no guesswork needed.
- • **Plug & Play Simplicity:** Set up in seconds with magnetic mounts—no tech skills required.
- • **Fail-Safe Overfill Defense:** Double-layer protection plus intelligent programming means zero flooding anxiety.

## Overview

The Duetto 2 is the world’s smallest dual-optical sensor aquarium auto top-off system, delivering ultra-precise water level management with dual sensors and intelligent QST programming. Featuring two layers of overfill protection, a durable stainless steel build, and effortless magnetic installation, it’s engineered for reliability and sleek integration into any aquarium setup.

## Description

World’s Smallest Dual-Sensor Aquarium Auto Top Off Features - NEW! Controller programming & circuitry for added system protection - NEW! Improved sensor design for longer durability - World’s smallest dual-sensor ATO - Two layers overfill protection - Intelligent QST programming - Secondary optical sensor - Super precise water level control - Super easy installation; plug-and-play - No programming or adjustments required - Works in complete darkness Why Choose Duetto2 ATO ? With huge features jammed in a tiny package, the Duetto2 is the perfect ATO for your aquarium. XPAqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level constant, the two sensors also work in concert with the intelligent QST programming to help prevent overfilling. All the installation parts are included and a magnetic coupling allows you to easily mount or adjust the dual-sensor. Installation takes just seconds so you can spend less time working on your aquarium and spend more time enjoying your aquarium. Specifications: - Power Adapter: - Power Input : 100-240 VAC, 50-60 Hz - Cable Length : 6 ft (180 cm) - DC Pump : - Head : 8.2 ft (250 cm) - Flow Rate : 74 gph (280 lph) - Power : 4.8 W @ 12 VDC - Cable Length : 6 ft (180 cm) - Max. Mounting Thickness : 1/2” (12.7 mm) - Length of Cable between Sensor and Controller : 6 ft (180 cm)

Review: Love these things - I have 6 of these right now and they run perfectly. I run them in both my freshwater planted tanks and reef tanks for years and have never had an issue. I can’t say the same thing for some other brands. Definitely recommend this product for anyone on the fence
Review: Holds water level right where you want it - This was easy to use. Literally plug in a couple of wires and the hose. Quiet and holds the water level right where I set the sensor

## Features

- Dual-Sensor Precision: Enjoy super precise water level control with our proprietary dual-optical sensor, ensuring your aquarium's water level remains constant
- Overfill Protection: Rest easy with two layers of overfill protection and intelligent QST programming that prevents overfilling
- Easy Installation: Experience hassle-free setup with plug-and-play functionality and a magnetic coupling for easy mounting or adjustment
- Durable Design: Benefit from an improved sensor design for longer durability and a stainless steel material for lasting performance
- Compact Size: Save space with the world's smallest dual-sensor ATO system, perfect for modern, sleek aquariums

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BWL74PD4 |
| Best Sellers Rank | #81,955 in Pet Supplies ( See Top 100 in Pet Supplies ) #300 in Aquarium Water Pumps |
| Brand Name | XP Aqua |
| Customer Reviews | 4.2 4.2 out of 5 stars (60) |
| Flow Rate | 74 Gallons Per Minute |
| Item Weight | 1 Pounds |
| Manufacturer | XP Aqua |
| Material Type | Stainless Steel |
| Maximum Lifting Height | 8.2 Feet |
| Power Source | Corded Electric |
| Product Style | Submersible |
| Unit Count | 1.0 Count |
| Voltage | 240 Volts |

## Product Details

- **Brand:** XP Aqua
- **Item Weight:** 1 Pounds
- **Manufacturer:** XP Aqua
- **Material:** Stainless Steel
- **Maximum Flow Rate:** 74 Gallons Per Minute
- **Maximum Lifting Height:** 8.2 Feet
- **Power Source:** Corded Electric
- **Style:** Submersible
- **Voltage:** 240 Volts

## Images

![Duetto 2 Dual-Sensor Complete Aquarium Auto Top Off ATO System - Image 1](https://m.media-amazon.com/images/I/61N1ivoh-cL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love these things
*by R***N on November 15, 2025*

I have 6 of these right now and they run perfectly. I run them in both my freshwater planted tanks and reef tanks for years and have never had an issue. I can’t say the same thing for some other brands. Definitely recommend this product for anyone on the fence

### ⭐⭐⭐⭐⭐ Holds water level right where you want it
*by B***S on February 12, 2026*

This was easy to use. Literally plug in a couple of wires and the hose. Quiet and holds the water level right where I set the sensor

### ⭐ Poor Quality: 2 purchased = 2 failed
*by A***R on December 9, 2024*

Don’t buy this one. It works great for few days only. We’ve had our fish tank for more than 10 years. Tried this brand the first time and quickly failed, I thought it was just bad luck, you got the one with a defect. Purchased another one, same thing, right after 30-day return window closed it failed. Lesson learned: poor quality, don’t buy it. In the video you can see that water is below sensor, this should send signal to run the pump to add water, this is it happening anymore and you need to press the button every 9 seconds to add some water, do it again and again until the water touch the sensor, otherwise the beep-beep will drive you crazy, then the water evaporates and the beep-beep is back and you need to manually add water again.

## Frequently Bought Together

- XP Aqua Duetto 2 Dual-Sensor Complete Aquarium Auto Top Off ATO System
- Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums, 16.9 Fl Oz (Pack of 1)
- Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-06*