Xp Aqua

Duetto Dual-Sensor Complete Aquarium ATO System

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Out of stock
$99.99 $127.99

Discontinued by Bulk Reef Supply
- +

With huge features jammed in a tiny package, the Duetto is the perfect ATO for your aquarium. XPAqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level constant, the two sensors also work in concert with the intelligent QST programming to help prevent overfilling.

All the installation parts are included and a magnetic coupling allows you to easily mount or adjust the dual-sensor. Installation takes just seconds so you can spend less time working on your aquarium and spend more time enjoying your aquarium.

  • World’s smallest dual-sensor ATO
  • Two layers overfill protectionIntelligent QST programming
  • Secondary optical sensor
  • Super precise water level control
  • Super easy installation; plug-and-play
  • No programming or adjustments required
  • Works in complete darkness



ATO DC Pump Max Head - 8.2 ft

ATO DC Pump Flow Rate - 74 gph

Controller Dimensions - 2.2" H x .88" W x 1.9" L

Sensor Cable Length - 10 feet

Pump Cable Length - 69 inches

Max Tank Mounting Thickness: 1/2"

Power Supply Cable Length: 67 inches

Tubing Diameter: 9mm OD | 6.5mm ID

Tubing Length: 6 feet


What's Included?

1x Duetto Optical Controller

1x Power Supply

1x Water Pump

1x Siphon Break

6ft Water Tubing

More Information
UPC 4714041211832
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Product Questions

I can’t find the replacement pumps for these anywhere. Any assistance?
Question by: Garret Giordano on Oct 23, 2022, 2:59 PM
Answer by: William Reed (BRS Staff) on Nov 2, 2022, 3:43 PM
I don't understand how it has two sensors? Looks like only one? Are there two sensors in the magnet part? Doesn't that mean if one fails they both fail?
Question by: Alex Neiberg on Feb 7, 2020, 12:58 AM
Hey there,

The sensors are in the two points on the tip of the sensor. If you look closely you can see them. The water line will stay between the two of them

Take care
Answer by: Thomas Billington on Feb 7, 2020, 7:38 AM
What diameter (ID and OD) is the tubing??
Question by: David on Jun 1, 2019, 3:31 PM
Hey there,
OD - 3/8"
ID - 5/16"
Take care!
Answer by: Mark Schlough on Jun 3, 2019, 4:44 PM