---
product_id: 619153697
title: "Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks"
brand: "fzone"
price: "MX$5674"
currency: MXN
in_stock: true
reviews_count: 5
category: "Fzone"
url: https://www.desertcart.mx/products/619153697-aquarium-ato-with-controller-qst2-0-auto-top-off-system
store_origin: MX
region: Mexico
---

# 74 GPH micro pump flow 0.79 in optical sensor size QST 2.0 overfill safety Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks

**Brand:** fzone
**Price:** MX$5674
**Availability:** ✅ In Stock

## Summary

> 💦 Keep your aquatic sanctuary flawless—automate with FZONE’s smart ATO system!

## Quick Answers

- **What is this?** Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks by fzone
- **How much does it cost?** MX$5674 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/619153697-aquarium-ato-with-controller-qst2-0-auto-top-off-system)

## Best For

- fzone enthusiasts

## Why This Product

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

## Key Features

- • **Smart Safety Monitoring:** QST 2.0 tech halts overfilling and alerts you instantly, protecting your aquatic ecosystem.
- • **Reliable Support & Warranty:** Backed by 2-year warranty and 24/7 customer care, ensuring peace of mind around the clock.
- • **Precision Water Level Control:** Dual optical sensors maintain water levels within 0.6 cm for flawless tank balance.
- • **Whisper-Quiet Pump Performance:** Compact 74 GPH pump operates silently, perfect for serene office or home environments.
- • **Effortless Installation & Versatility:** Includes magnets, check valve, and 6-ft tubing—fits rimmed, rimless, and sump tanks seamlessly.

## Overview

The FZONE Aquarium ATO QST2.0 is a cutting-edge auto top-off system designed for both saltwater and freshwater tanks. Featuring dual precision optical sensors, a quiet 74 GPH micro pump, and advanced QST 2.0 safety technology, it maintains optimal water levels with minimal effort. Compact and versatile, it fits various tank types and includes all necessary accessories for quick setup. Supported by a 2-year warranty and 24/7 customer service, it’s the ultimate solution for stress-free aquarium maintenance.

## Description

Evaporation is every tank owner’s constant enemy. Auto top off systems are a crucial piece of any fish tank. FZONE Automatic Top-Off (ATO) systems provide convenient assurances. The products use water from a reservoir to refill tank or sump levels. This helps maintain specific gravity and salinity. In particular, this is important in reef and marine tanks. Drops in these levels increase stress on fish and can be fatal.

Review: Veramente un ottimo prodotto, la schiena ringrazia!!! - Avendo in casa diverse vasche nel periodo estivo mi trovo a dover rabboccare l'acqua evaporata, se la vasca è piccola ci si sta dietro ma quando questa è grande diventa un vero problema. Per tale scopo ho acquistato questo sistema di rabbocco automatico, l'ho testato appena arrivato simulando una evaporazione minima e devo dire che dopo che l'acqua è scesa di pochi millimetri, il sistema ha attivato la pompa per ristabilire il corretto livello, ho ripetuto diverse volte questa prova e il sensore è sempre intervenuto in modo preciso. La pompa l'ho immersa in una tanica da 20 litri essendo piccola per mia fortuna è passata dal foro del tappo, la pompa riesce a spingere l'acqua tranquillamente nella vasca nonostante sia a livello pavimento. Nella confezione c'è tutto il necessario all'installazione, non manca proprio nulla, quindi che dire il prodotto è perfetto, completo e allo stesso tempo funziona bene. Dimenticavo lo utilizzo anche per i cambi settimanali d'acqua così non porto più su le taniche e fa tutto lui in automatico e la mia schiena ringrazia.
Review: Great ATO that was easy to install - Great product with useful features. Easy to install and works very well. The low resovior water warning light is a great touch.

## Features

- Upgraded 2.0 ATO System：The 2.0 ATO system ensures efficient daily water level maintenance for saltwater and freshwater tanks, making it ideal for use during trips or holidays. The upgraded interface allows you to easily start, pause, or resume the system with the FZ button
- Compact and Versatile Design：The optical sensor measures just 0.79 inches in diameter, making it suitable for rimmed, rimless, or sump tanks. Dual sensors, spaced 0.1 cm apart, monitor water levels with precision, maintaining a difference of only 0.6 cm. Recommended for tanks with wave fluctuations under 1 cm.
- Enhanced Safety Features：QST 2.0 technology provides real-time overfill protection. The system stops the pump and triggers an alarm if refilling exceeds 3 times the preset limit. It also detects sensor issues and low reservoir levels for added safety.
- Quiet Micro Pump：The compact pump fits tanks with neck sizes over 1.97 inches, offering a flow rate of 74 gallons per hour and a lift height of up to 2 meters. Optimized operation reduces unnecessary activations, extending pump life.
- Complete Accessories Included：The set includes strong magnets (compatible with tank walls up to 0.78 inches thick), a check valve to prevent backflow, and a 6-foot (180 cm) tube for quick installation.
- 2-Year Warranty & 24/7 Customer Support:FZONE provides a comprehensive 2-year warranty along with 24/7 online customer support. If you have any questions or encounter any issues with your product, our team is always available to assist you—anytime, anywhere.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C68N3WK9 |
| Best Sellers Rank | #63,651 in Pet Supplies ( See Top 100 in Pet Supplies ) #623 in Water Pumps (Pet Supplies) |
| Brand | FZONE |
| Brand Name | FZONE |
| Colour | Blue2 |
| Customer Reviews | 4.1 out of 5 stars 415 Reviews |
| Flow Rate | 1.23 Gallons Per Minute |
| Included Components | prevent backflow |
| Item Dimensions L x W x H | 5L x 3W x 3H Millimeters |
| Item Type Name | ATO |
| Item Weight | 0.4 Kilograms |
| Manufacturer | FZONE |
| Manufacturer Part Number | ATO-580P |
| Material | Polypropylene (PP) |
| Material Type | Polypropylene (PP) |
| Maximum Lifting Height | 2 Metres |
| Model Number | FZ-580P |
| Power Source | Corded Electric |
| Product Dimensions | 5L x 3W x 3H Millimeters |
| Product Style | Auto |
| Specific Uses For Product | Inside |
| Style | Auto |
| Unit Count | 1.0 Count |
| Voltage | 15 Volts |

## Product Details

- **Brand:** FZONE
- **Colour:** Blue2
- **Item Weight:** 0.4 Kilograms
- **Material:** Polypropylene (PP)
- **Maximum Flow Rate:** 1.23 Gallons Per Minute
- **Maximum Lifting Height:** 2 Metres
- **Power Source:** Corded Electric
- **Product Dimensions:** 5L x 3W x 3H Millimeters
- **Style:** Auto
- **Voltage:** 15 Volts

## Images

![Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 1](https://m.media-amazon.com/images/I/51LdVhZJ0ML.jpg)
![Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 2](https://m.media-amazon.com/images/I/61-alUmNoWL.jpg)
![Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 3](https://m.media-amazon.com/images/I/61mWx1T2hGL.jpg)
![Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 4](https://m.media-amazon.com/images/I/61NoiLfKB8L.jpg)
![Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 5](https://m.media-amazon.com/images/I/71aVOgelolL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Veramente un ottimo prodotto, la schiena ringrazia!!!
*by R***A on 25 November 2023*

Avendo in casa diverse vasche nel periodo estivo mi trovo a dover rabboccare l'acqua evaporata, se la vasca è piccola ci si sta dietro ma quando questa è grande diventa un vero problema. Per tale scopo ho acquistato questo sistema di rabbocco automatico, l'ho testato appena arrivato simulando una evaporazione minima e devo dire che dopo che l'acqua è scesa di pochi millimetri, il sistema ha attivato la pompa per ristabilire il corretto livello, ho ripetuto diverse volte questa prova e il sensore è sempre intervenuto in modo preciso. La pompa l'ho immersa in una tanica da 20 litri essendo piccola per mia fortuna è passata dal foro del tappo, la pompa riesce a spingere l'acqua tranquillamente nella vasca nonostante sia a livello pavimento. Nella confezione c'è tutto il necessario all'installazione, non manca proprio nulla, quindi che dire il prodotto è perfetto, completo e allo stesso tempo funziona bene. Dimenticavo lo utilizzo anche per i cambi settimanali d'acqua così non porto più su le taniche e fa tutto lui in automatico e la mia schiena ringrazia.

### ⭐⭐⭐⭐⭐ Great ATO that was easy to install
*by R***D on 17 January 2026*

Great product with useful features. Easy to install and works very well. The low resovior water warning light is a great touch.

### ⭐⭐ De cada 5 rellenos, sólo 2 los hace bien
*by A***O on 20 June 2025*

No funciona bien. Se suspende a cada relleno aún teniendo agua el depósito. Debes estar muy al pendiente a que no se suspenda (ponerse en rojo la luz), es lo mismo a estar rellenando en modo manual. Tendré que comprar otro que sea seguro en su funcionamiento.

## Frequently Bought Together

- FZONE ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-07-24*