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A black automatic water top-off system with a clear fitting and a coiled white tube is shown next to its packaging.
A DC Refill Pump and a strong suction cup are shown for an automatic water top-off system.
Two automatic water top-off systems are shown, one blue light working and one red light caution.
ATO Controller device showing components like a sensor and button for one-click initialization
A package containing an automatic water top-off system for aquariums, including a pump, manual, adapter, hose holder, tubing,
Diagram showing how to use an automatic water top-off system for aquariums with a pump and sensor
A black FZONE auto top off system with dual optical sensors and controller, shown next to images of fresh and reef tanks.
Installation diagram showing the setup of an automatic water top-off system with a reservoir, tank/sump, ATO sensor, controll
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Automatic Water Top-Off System for Aquariums

Regular price $219.99 Sale price $182.99 – $184.99

Why customers love it

Reliable water level management for your aquatic life.

This automatic top-off system offers a convenient and reliable solution for monitoring and replenishing water evaporation in both saltwater and freshwater fish tanks.

  • Provides a reliable solution for monitoring and replenishing water evaporation.
  • Ensures aquatic life stays healthy.
  • Features real-time overfill protection and safety alerts to prevent accidental damage.
  • Fits various tank types, including rimmed, rimless, and sump tanks.
  • Equipped with a micro whisper pump capable of lifting water up to 2 meters.
A black automatic water top-off system with a clear fitting and a coiled white tube is shown next to its packaging.

Key Features

Reliable Monitoring

Provides a convenient and reliable solution for monitoring and replenishing water evaporation.

Aquatic Health Assurance

Ensures aquatic life stays healthy.

Enhanced Visibility

Offers an enhanced visual interface for easy operation.

Safety Protection

Features real-time overfill protection and safety alerts to prevent accidental damage.

Setup

Setup and Operation

No electrician, no wiring, no fuss.

  1. Monitor Water Levels

    Use the system to monitor water evaporation and replenishment.

  2. Activate Pump

    The micro whisper pump is capable of lifting water up to 2 meters.

  3. Ensure Integrity

    Strong magnets and check valves prevent backflow and ensure system integrity.

Specs

The details that matter

Built to last outdoors, season after season.

Pump Capability
up to 2 meters
Visual Interface Version
2.0 version
Compatibility
rimmed tanks, rimless tanks, sump tanks

Comparison

Why Choose This System

Not all products in this category are built the same.

Feature
SmartPicksWorld
Typical alternative
Overfill Protection
Real-time overfill protection and safety alerts.
No equivalent mentioned.
Backflow Prevention
Prevent backflow via magnets and check valves.
No equivalent mentioned.
Monitoring Type
Dual precision optical sensors.
Not specified.
Maintenance Feature
Includes a pause button for convenient maintenance.
No equivalent mentioned.

Our worry-free shopping promise

If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.

Frequently asked questions

Everything you might want to know before you order.

What is the purpose of this system?

This automatic top-off system provides a convenient and reliable solution for monitoring and replenishing water evaporation.

How does it prevent accidental damage?

It features real-time overfill protection and safety alerts to prevent accidental damage.

What is included in the kit?

The kit includes a micro whisper pump, dual precision optical sensors, strong magnets, and check valves.

Can this system be used for saltwater or freshwater tanks?

This system is ideal for fish tanks, including both saltwater and freshwater.

How can I maintain the system during tank upkeep?

You can use the pause button for convenient maintenance during tank upkeep.

Shipping & returns

Shipping

  • Delivers to United States (based on your selected country/region).
  • Estimated delivery: 3–15 business days after dispatch.
  • Shipping cost: Free.

Returns

You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.