Xp Aqua

Sumpless ATO2 Auto Top Off System

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No sump, no problem! An ATO system designed for aquariums without sumps 

  • New Controller programming for added protection
  • New sensor design for increased longevity
  • Built-in backup sensor
  • Provides surface skimming
  • Media Chamber for filtration media

The Sumpless ATO2 is the ultimate ATO solution for aquariums without sumps. It incorporates a stylish overflow box and a dual-optical sensor ATO that will ensure your aquarium is always filled to the correct water level. A must-have for maintaining a stable salinity level for your tank inhabitants.

Thanks to its magnetic mount, the overflow box can easily be fixed to any aquarium with glass thickness of up to 1/2" thick. It serves as a surface skimmer that efficiently removes that unwanted film from the water's surface, while also doubling as a reactor for media like carbon and GFO.

XPAqua's dual-optical sensor includes two precise level sensors. The ATO pump is activated when the water level drops below the primary sensor, then stops when the water level reaches the sensor. To avoid overfilling, the secondary sensor acts as a backup to shut off the ATO pump in the event there is an issue with the primary sensor.



Power Adapter:
Power Input: 100-240 VAC, 50-60 Hz
Cable Length: 6 ft

ATO DC Pump :
Head: 8.2 ft
Flow Rate: 74 gph
Power: 4.8 W @ 12 VDC
Cable Length: 6 ft

Flexi Overflow Box: 3.94” x 2.17” x 6.30”
Max. Volume of Media Chamber: 3.74” x 1.99” x 1.97”
Length of Cable between Sensor and Controller: 6 ft

Max. Mounting Thickness:
Sensor: 1/2”
Flexi Overflow Box: 1/2”

What's Included?

Duetto 2 Controler w/dual optical sensor

Flexi Overflow Box w/magnet mount


DC Flexi Return Pump

90mL AquaFX Clear Blaster Nano Filter Media

Tank mount tube bracket

7ft Water Tubing

Siphon Break

Power Supply

More Information
UPC 4714041212419
Dimensions (Overflow Box) 3.94”L x 2.17”W x 6.30”H
Max Tank Thickness 1/2 in.
Included Mounting Magnetic, Hang On/Bracket
Control Type Preset Plug & Play (No Controls)
Pump Included Yes
Pump Model XP Aqua ATO DC Pump
Flow Rate 74 GPH
Tubing Length 7 Feet
Power Type DC
Power Consumption 4.8 Watts
Power Cord Length 6 Feet
Water Level Detection Optical Sensor
Alarms Audible, Visual
Safety Features Overflow Timer, Includes Anti-Siphon Valve
Max Head Height 5 -10 Feet
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