
Red Sea

Red Sea
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The ReefATO+ from Red Sea offers you a whole new way to keep your saltwater aquarium in top shape. This innovative system helps you maintain your tank’s water level and salinity at optimal levels, control the water temperature, and prevent potential water damage. Curious? We at Petonus are happy to tell you everything you need to know about this great refill system. Check out our online store right away or ask for a personal consultation!
In marine aquariums, water quality determines the health and growth of your corals and fish. To reliably compensate for fluctuations in water level and salinity, Red Sea has developed the ReefATO+—a smart, automatic refill system for your aquarium.

The 3-in-1 ReefATO+ ! Fully featured, super smart and exceptionally reliable.
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Using state-of-the-art solid-state EC technology and robust titanium probes, the ReefATO+ continuously monitors the water level and electrical conductivity. If the level drops, the system automatically refills the tank, ensuring that salinity and water volume remain in balance at all times. This ensures stable conditions for your aquarium inhabitants at all times—without any extra effort.
If you already own a Red Sea REEFER system, you can make it even smarter with the ReefATO+ Upgrade Kit. It offers you greater precision, less maintenance, and maximum reliability through:
The ReefATO+ from Red Sea is an innovative top-off system that makes caring for your aquarium much easier. It continuously monitors the water level and automatically compensates for evaporation loss—keeping your aquarium stable and healthy at all times without the need for manual top-offs.

But the ReefATO+ can do even more: In addition to the classic auto-top-off function, it combines three powerful features in one compact device. It not only ensures reliable refilling with fresh water but also provides precise monitoring of water parameters and offers smart control options that make your daily life as an aquarist significantly easier.
The ReefATO+ impresses with state-of-the-art technology: A slim, fail-safe water level sensor with solid-state EC technology and titanium probes precisely measures the water level and reliably controls the top-off pump. This ensures that water volume and salinity always remain within the optimal range. At the same time, an integrated, high-precision digital thermometer monitors your tank’s temperature (±0.1 °C) and conveniently alerts you to deviations via the ReefBeat app.

The compact 12 V DC pump with adjustable flow rate ensures quiet and efficient refilling—even for large tanks. Thanks to a 3 m hose with a check valve, the water supply runs safely and without splashing.
For maximum safety, the ReefATO+ is equipped with multiple protective mechanisms:
The 3-in-1 ReefATO+ is the perfect choice for any reef aquarium enthusiast. This smart top-off system helps you automatically maintain the optimal water level and salinity in your RO water reservoir, ensuring that your aquarium’s freshwater is always optimally treated. In addition, the water temperature in the tank is precisely monitored to ensure it always meets the needs of your marine life, and a leak detector quickly identifies any potential leaks.
Experience the ultimate aquarium setup with the ReefATO+ from Red Sea! This smart hardware ensures optimal conditions so your reef system runs smoothly and stays healthy. Order it today from Petonus and soon enjoy the many benefits of automated reef care for yourself.
Get personalized advice from an aquarium expert now
We offer the revolutionary ReefATO+ from Red Sea at an unbeatable price, and you can have it delivered right to your door in just a few days! If you have any questions about this new smart device, our knowledgeable team of experts is, of course, happy to assist you. We’ll explain everything you need to know about this refill system and show you how it can help you with your aquarium maintenance. Call us at 03641/376432 or send us a message via the contact form to get honest and professional advice on all topics related to marine aquariums!