1
Aquarium Experts
The Ultimate ATO is the world’s first quad-sensor ATO; with
one sensor for top-off detection and two sensors for overfill
detection. It also features a non-filling / run-dry detection
sensor; which is also a first in any aquarium ATO.
For your convenience, we include an AC Switch for
installations that require more-powerful pumps and a
Solenoid Valve for installations that connect directly to
RO/DI systems.
The Ultimate ATO provides the ultimate protection as well as
the ultimate convenience. The system is designed to be
plug-and-play and make installation as easy as possible.
These instructions will guide you through the various
installation options and well as explain the how the system
will operate.
Thank you again for choosing XP Aqua!
Thank you for purchasing the XP Aqua Ultimate ATO.
