---
product_id: 538510731
title: "Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank ATO Aquarium Top Off System"
brand: "mostaqua"
price: "55506CFA"
currency: XOF
in_stock: true
reviews_count: 1
category: "Most Aqua"
url: https://www.desertcart.sn/products/538510731-auto-top-off-for-freshwater-saltwater-aquarium-fish-tank-ato
store_origin: SN
region: Senegal
---

# Compact, space-saving design Upgraded safer optical sensor 70 GPH micro whisper pump Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank ATO Aquarium Top Off System

**Brand:** mostaqua
**Price:** 55506CFA
**Availability:** ✅ In Stock

## Summary

> 💧 Never let your tank run dry—effortless top-offs, flawless aquatic vibes.

## Quick Answers

- **What is this?** Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank ATO Aquarium Top Off System by mostaqua
- **How much does it cost?** 55506CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/538510731-auto-top-off-for-freshwater-saltwater-aquarium-fish-tank-ato)

## Best For

- mostaqua enthusiasts

## Why This Product

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

## Key Features

- • **Space-Savvy Design:** Compact footprint fits seamlessly into any freshwater or saltwater aquarium setup.
- • **Smart Sensor Safety:** Upgraded optical sensor ensures precise water level detection, preventing overfills and floods.
- • **Whisper-Quiet Power:** Micro pump delivers up to 70 GPH with a max head of 3 meters—silent yet mighty.
- • **Peace of Mind Warranty:** Backed by a 90-day MostAqua warranty—because your aquatic ecosystem deserves reliability.
- • **Dual-Purpose Tube Holder:** Patented tube holder secures refill and air tubes for hassle-free installation and maintenance.

## Overview

The MostAqua Auto Top Off System is a compact, reliable aquarium accessory designed for both freshwater and saltwater tanks. Featuring a whisper-quiet micro pump with a 70 GPH flow rate and an upgraded optical sensor, it ensures timely refilling without risk of overflow. Its patented tube holder simplifies setup, while a 90-day warranty guarantees customer satisfaction and peace of mind.

## Description

The auto top off system is designed for aquarium tank refiing.

Review: Perfect - Works perfectly!! Quite easy to install except inserting the tube to the pump - just inserted back of the tooth brush to it for few secs, so once it expanded a bit I could fix it to the pump easily. Tested only 2 days, so far so good. However, the box shows 2 sensors which is quite confusing as I thought it’s the upgraded model with dual relay so I assumed I’m getting 2 level sensors.

## Features

- Compact design, upgraded safer optical sensor, no matter how long you are away, ATO system can ensure that your tank is refilled in time.
- The unit comes with a micro whisper pump, small but powerful, with a maximum head of 3 meters and a maximum flow rate of 70 GPH.
- Anti-overfill function can avoid flooding your fish tank, more reliable.
- The patented design of the tube holder can not only fix the re-filling tube but also can be used to hold the air tube.
- MostAqua offer 90 Days warranty. If you are not happy with our Aquarium ATO or receive a defective unit, we will propose you satisfactory resolution. Please feel free to contact with us if any questions or concerns.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BZ3GWCRB |
| Additional Features | Lightweight, Saltwater or Freshwater, Self Watering |
| Best Sellers Rank | #14,023 in Pet Supplies ( See Top 100 in Pet Supplies ) #49 in Aquariums |
| Brand | MostAqua |
| Brand Name | MostAqua |
| Color | Black |
| Customer Reviews | 3.9 out of 5 stars 205 Reviews |
| Included Components | ATO Controller, Water Pump, Power Adapter, Tubing, Tube Holder, User Manual |
| Item Type Name | Aquarium ATO |
| Item Weight | 372 g |
| Item weight | 372 g |
| Manufacturer | MostAqua Equipment and Accessories |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Model Number | ATO100 |
| Product Style | Aquarium Auto Top Off System |
| Special features | Lightweight, Saltwater or Freshwater, Self Watering |
| Specific Uses For Product | Indoor |
| Specific uses for product | Indoor |
| Style | Aquarium Auto Top Off System |
| Target Species | Aquarium |
| Unit Count | 1 Count |
| Vivarium Type | Aquarium |

## Product Details

- **Brand:** MostAqua
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Special features:** Lightweight, Saltwater or Freshwater, Self Watering
- **Item weight:** 0.82 Pounds
- **Specific uses for product:** Indoor

## Images

![Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank ATO Aquarium Top Off System - Image 1](https://m.media-amazon.com/images/I/61-GHPnTCtL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Perfect
*by M***O on 14 September 2024*

Works perfectly!! Quite easy to install except inserting the tube to the pump - just inserted back of the tooth brush to it for few secs, so once it expanded a bit I could fix it to the pump easily. Tested only 2 days, so far so good. However, the box shows 2 sensors which is quite confusing as I thought it’s the upgraded model with dual relay so I assumed I’m getting 2 level sensors.

## Frequently Bought Together

- MostAqua Aquarium ATO, Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank Automatic Top Off System (ATO 100)
- Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation
- 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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**Shop now:** [https://www.desertcart.sn/products/538510731-auto-top-off-for-freshwater-saltwater-aquarium-fish-tank-ato](https://www.desertcart.sn/products/538510731-auto-top-off-for-freshwater-saltwater-aquarium-fish-tank-ato)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-27*