Red Sea ReefATO+ Upgrade Kit (for Reefer Aquariums)

Upgrade your Red Sea REEFER aquarium with smart auto top-off technology using the Red Sea ReefATO+ Upgrade Kit. Designed specifically for REEFER system owners who already have a reservoir and pump, this kit adds the ReefATO+ smart sensor with built-in temperature monitoring, leak detection, and full ReefBeat app connectivity — turning your existing setup into a smart ATO system.

Features

• Designed specifically for Red Sea REEFER aquarium systems
• Smart water-level sensor with built-in temperature monitor
• Integrated leak detector prevents flooding
• ReefBeat app connected for real-time status and notifications
• Magnetic mount sensor — no suction cups or brackets needed
• Adjustable water-level set point for precise top-off height
• Safety shutoff prevents overfilling if sensor is displaced
• Uses your existing REEFER reservoir and pump — no duplicate hardware
• Quiet operation with no external controller box
• Quick plug-and-play installation on REEFER systems

Specifications

Frequently Asked Questions

Will this work with non-Red Sea aquariums?
The Upgrade Kit is designed specifically for Red Sea REEFER systems that already have a built-in reservoir and pump. If you have a different aquarium, the full ReefATO+ Auto Top Off System is the better choice — it includes everything you need.

What does the Upgrade Kit include?
The kit includes the ReefATO+ smart sensor unit with built-in temperature monitor and leak detector, plus the mounting hardware and tubing needed to connect to your existing REEFER reservoir and pump.

Do I need the ReefBeat app?
The ReefBeat app is free and recommended for the best experience. It provides real-time ATO status, temperature readings, leak alerts, and dosing notifications if you also run Red Sea dosing equipment.