Red Sea Reef ATO+ Upgrade Kit

Red Sea ReefATO+ Reefer Upgrade Kit

Smart, reliable auto top-off system designed specifically for Red Sea Reefer aquariums.

The ReefATO+ Reefer Upgrade Kit is a dedicated version of Red Sea’s advanced automatic top-off system, designed to integrate seamlessly into all Red Sea Reefer aquariums. Unlike the universal ReefATO+ (which includes a magnetic sensor mount), this upgrade kit connects directly into the Reefer’s sump design for a perfect fit.

With triple protection, a quiet and powerful DC pump, and smart monitoring through the ReefBeat® app, the ReefATO+ maintains stable water levels and salinity automatically. This means less daily maintenance and more time to enjoy your reef.

ATO+ Sensor

Slim-line, multi-input, titanium probe, solid state (EC technology) water level sensor, with a built-in digital thermometer accurate to 0.1 degrees.

ATO Pump

Quiet, variable flow, serviceable ATO pump (6-10w). Diameter 4.5cm, max flow 300lph/75 gph with a max head height of 2.5 meters.

Leak Detector

Highly Sensitive, REEF-SPEC, titanium probe leak detector for RO & saltwater. Triggers notifications via the ReefBeat App and features an audible alarm. 

Smart Controller

The microprocessor monitors and reliably controls all of the components and connects them to the Reef Beat eco-system. 

Key Lifestyle Benefits

• Purpose-Built for Reefer Tanks – Direct-fit installation, no magnetic holder required.

• Set & Forget Stability – Automatically maintains sump water level and salinity.

• Peace of Mind – Triple redundancy protection system ensures safety.

• Smart ReefBeat® App Control – Configure, monitor, and receive alerts from your phone.

• Low Maintenance – Eliminates daily manual top-offs and keeps your reef stable.

Core Features

• Triple Redundancy Protection:

  • Precision optical sensor for accurate water level monitoring

  • Mechanical float switch as a failsafe backup

  • Software timer to prevent overfilling if sensors fail

• Smart DC Pump: Quiet, efficient, long-life pump with 12,000+ hours runtime.

• ReefBeat® App Integration: Remote control, alerts, and usage tracking.

• Water Quality Monitoring: Tracks refill volumes and alerts you to unusual evaporation trends.

• Direct Reefer Integration: Designed to connect straight into the Reefer sump, ensuring a tidy installation.

Technical Specifications

• Compatible Systems: Red Sea Reefer aquariums (all models)

• Pump Output: Up to 300 LPH

• Max Head Height: Up to 2.5m

• Reservoir Options: Works with Red Sea ReefCan or other freshwater containers

• Connectivity: Wi-Fi enabled, controlled via ReefBeat® App (iOS & Android)

• Installation: Reefer-specific sump mount (no magnetic sensor holder)

Suitable For

• All Red Sea Reefer aquariums (Nano, XL, Peninsula, G2 models, etc.)

• Reefkeepers who want stable, automated salinity control

• Hobbyists looking for seamless integration without external mounts

Which ReefATO+ Do I Need?

Choosing the correct ReefATO+ version depends on your aquarium setup:

Warranty Information

The ReefATO+ Reefer Upgrade Kit comes with a manufacturer’s warranty covering pump, sensors, and controller against defects. UK support and service are available.