---
product_id: 550266203
title: "Auto Top Off System Saltwater Aquarium, Water ATO for Reef Fresh Tank"
brand: "useek"
price: "R1601"
currency: ZAR
in_stock: true
category: "Useek"
url: https://www.desertcart.co.za/products/550266203-auto-top-off-system-saltwater-aquarium-water-ato-for-reef
store_origin: ZA
region: South Africa
---

# 1mm precision sensing 0.7 inch compact design QST real-time anti-overflow Auto Top Off System Saltwater Aquarium, Water ATO for Reef Fresh Tank

**Brand:** useek
**Price:** R1601
**Availability:** ✅ In Stock

## Summary

> 🌊 Keep your reef flawless with precision and style!

## Quick Answers

- **What is this?** Auto Top Off System Saltwater Aquarium, Water ATO for Reef Fresh Tank by useek
- **How much does it cost?** R1601 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/550266203-auto-top-off-system-saltwater-aquarium-water-ato-for-reef)

## Best For

- useek enthusiasts

## Why This Product

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

## Key Features

- • **Peace of Mind Warranty:** Backed by a 2-year warranty and responsive support, because your reef deserves the best.
- • **Ultra-Compact Elegance:** Sleek 0.7-inch nano design fits discreetly in any rimmed or rimless aquarium setup.
- • **Smart Anti-Overflow Safety:** QST tech stops overfilling with real-time alerts, safeguarding your tank 24/7.
- • **Precision Water Level Control:** Maintain perfect 1mm accuracy to stabilize salinity and protect your reef ecosystem.
- • **Effortless Setup & Versatility:** All-in-one kit ensures quick installation and seamless integration for any saltwater tank.

## Overview

The Useek Auto Top Off System is a cutting-edge aquarium water leveler designed for saltwater reef tanks. Featuring 1mm precision sensing and QST real-time anti-overflow technology, it automatically maintains stable water levels and salinity to protect aquatic life. Its ultra-compact 0.7-inch design fits seamlessly in any tank, while easy installation and a 2-year warranty provide reliability and peace of mind for aquarium enthusiasts.

## Description

desertcart.com : Useek Auto Top Off System Saltwater Aquarium, Water ATO for Reef Fresh Tank | Stable Water Levels & Salinity, QST Real-Time Anti-Overflow, 1mm Precision Sensing, Easy Setup, 2-Year Warranty, Blue : Pet Supplies

## Features

- WHY YOU NEED ATO? - All Aquarium regularly evaporate water. In salt water Aquarium, as the water evaporates, the water level in Aquarium will drop and the salinity concentration will rise. Compared with other methods,The ATO system automatically maintains the water level in the aquarium, preventing fluctuations in salinity concentration and maintaining a stable and healthy environment for aquatic life.
- SPACE-SAVING, COMPACT DESIGN - With a nano size of only 0.7 inches diameter, this Auto Top Off for aquariums is both unobtrusive and elegant, fitting seamlessly in rimmed or rimless tanks and sumps.
- REAL-TIME PROTECTION WITH QST - Our ATO system carefully calculates and adjusts to the ideal fill time, offering visual alerts and stopping the pump if it detects a refilling time 6 times longer than expected, ensuring protection against overfilling, dry running, and sensor malfunctions.
- EASY INSTALLATION & VERSATILE USE - The Auto Top Off kit includes everything you need for a hassle-free setup, making it simple to integrate into any rimmed or rimless aquarium. A perfect gift for aquarium enthusiasts, this system is a delightful surprise for friends and family alike.
- TWO-YEAR WARRANTY & RESPONSIVE CUSTOMER SERVICE - Your satisfaction is our priority, so we offer a two-year product warranty and friendly customer support to address any questions or concerns. Enjoy peace of mind with our free replacement policy and helpful assistance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CFVWDKMC |
| ASIN  | B0CFVWDKMC |
| Additional Features | Space-Saving, Real-Time Protected, Automatic Water Level Maintenance |
| Best Sellers Rank | #8,730 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Water Pumps #53 in Aquarium Water Treatments |
| Brand Name | Useek |
| Color | Blue |
| Customer Reviews | 4.0 4.0 out of 5 stars (815) |
| Date First Available  | May 15, 2023 |
| Included Components | Pump |
| Item Shape | Irregular shape |
| Item Type Name | Pump |
| Item Weight | 0.4 kg |
| Item model number  | AT-200 |
| Manufacturer | Useek |
| Manufacturer  | Useek |
| Manufacturer Part Number | AT-200 |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Model Number | AT-200 |
| Number of Items | 1 |
| Package Dimensions  | 6.46 x 6.34 x 2.68 inches; 14.07 ounces |
| Pet Type | Fish |
| Product Style | Modern |
| Target Species | Fish |
| UPC | 799355749961 |
| Unit Count | 1 Count |
| Vivarium Type | Aquarium |
| Warranty Description | 1 |

## Product Details

- **Brand:** Useek
- **Color:** Blue
- **Included Components:** Pump
- **Item Weight:** 0.4 kg
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Number of Items:** 1
- **Shape:** Irregular shape
- **Special Feature:** Space-Saving, Real-Time Protected, Automatic Water Level Maintenance
- **Style:** Modern
- **UPC:** 799355749961

## Images

![Auto Top Off System Saltwater Aquarium, Water ATO for Reef Fresh Tank - Image 1](https://m.media-amazon.com/images/I/713hjxk8HnL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Would this work on a 60 gallon AIO? I’ve only had it on a nano**
A: More surface area = longer top off

**Q: Does the sensor light up or is there no light in the sensor?**
A: It lights up.  It blinks when topping off

## Frequently Bought Together

- Useek Auto Top Off for Saltwater Aquarium Water ATO System for Both Reef and Fresh Tank - Blue
- Aquatic Life RO Buddie 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Units for Aquarium, 50 GPD

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**Shop now:** [https://www.desertcart.co.za/products/550266203-auto-top-off-system-saltwater-aquarium-water-ato-for-reef](https://www.desertcart.co.za/products/550266203-auto-top-off-system-saltwater-aquarium-water-ato-for-reef)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-08-27*