Reef Breeders Exo ATO
Exo-ATO by Reef Breeders is one of the premiere ATO systems with self-contained electronics that are externally mounted to reduce damage caused by water or moisture while allowing easy installation and access. The compact controller and sensor have a small 1/2″ thick x 1″ diameter mounting magnet leaving only a small footprint on the wetside of the sump.
| Feature | Description |
|---|---|
| Easy Setup | No wires in the tank |
| Pump and Tubing | Includes pump and tubing – just add water |
| Compatibility | Perfect for in-sump use. Works with any clear glass/acrylic tank 0.2″ or thinner |
FAQ
Can the Exo ATO be used in a sump with a glass or acrylic tank?
Yes, it works with any clear glass or acrylic tank 0.2″ or thinner.
Is the Exo ATO easy to install for beginners?
Yes, it has a simple setup with no wires in the tank and includes all necessary pump and tubing.
Does the Exo ATO require any external power source?
Please contact customer service




Jennifer Hemmings –
Installed the Exo ATO in my 10-gallon sump last week. No wiring issues, just added water and it started working right away. The external mount keeps the electronics dry and the system is very reliable. Works perfectly with my reef tank setup.
Harry Metcalfe –
Great for a beginner. The instructions were clear and the pump runs smoothly. I appreciate that it doesn’t require any internal wiring. Works well with my acrylic sump and maintains stable water parameters.
Kimberly Murray –
The compact size and easy installation made this a perfect fit for my small sump. The magnet mount is secure and the system has been running without any issues for over two months.