Skip to content
XP Aqua Sumpless 2 Auto Top Off System box front view

XP Aqua Sumpless 2 Auto Top Off System

$169.99

Notify me when back in stock

Why Buy From Us?

🚛 Free Shipping On All Orders

Don't worry about shipping costs. We prioritize customer satisfaction from start to finish.

☑️ 30-Day No Stress Returns

Why stress when you're covered by our 30-Day No Stress Returns Policy!

💲 Price Beat Guarantee

Found a product cheaper elsewhere online? Let us know! We'll match or beat it.

Call us to get a great price! (800)518-0141

Effortless Aquarium Top-Offs for Sumpless Tanks with XP Aqua Sumpless 2 ATO

Seamlessly Maintain Water Levels in Your Rimless Aquarium with the XP Aqua Sumpless 2

The XP Aqua Sumpless 2 Auto Top Off (ATO) System is the perfect solution for aquariums without sumps. This innovative system combines a stylish overflow box with a dual-optical sensor ATO to ensure your aquarium is always filled to the correct water level.

XP Aqua Sumpless 2 Auto Top Off System with pump

Key Features & Benefits of the XP Aqua Sumpless 2:

  • Sumpless Design: Specifically engineered for aquariums without sumps, making it easy to maintain a stable salinity level for your tank inhabitants.
  • Dual-Sensor Protection: Two precise optical sensors work together to maintain accurate water levels and prevent overfilling, offering double the protection for your rimless aquarium.
  • Surface Skimming: The overflow box doubles as a surface skimmer, efficiently removing the unwanted film from the water's surface.
  • Media Reactor: The overflow box also functions as a media reactor, allowing you to use media like carbon or GFO for additional filtration.
  • Easy Installation: Thanks to its magnetic mount, the overflow box can be easily attached to any aquarium with glass up to 1/2" thick.
  • New and Improved: This second-generation system features updated controller programming and sensor design for added protection and longevity.

XP Aqua Sumpless 2 Auto Top Off System assembled

Specifications:

  • Power Input: 100-240 VAC, 50-60 Hz
  • Cable Length: 6 ft
  • ATO DC Pump Head: 8.2 ft
  • ATO DC Pump Flow Rate: 74 gph
  • ATO DC Pump Power: 4.8 W @ 12 VDC
  • Flexi Overflow Box Dimensions: 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 & Overflow Box): 1/2”

XP Aqua Sumpless 2 Auto Top Off System assembled angled view

What's Included:

  • Duetto 2 Controller with a dual optical sensor
  • Flexi Overflow Box with magnet mount
  • DC ATO Pump
  • DC Flexi Return Pump
  • 90mL AquaFX Clear Blaster Nano Filter Media
  • Tank mount tube bracket
  • 7ft Water Tubing
  • Siphon Break
  • Power Supply

XP Aqua Sumpless 2 Auto Top Off System box rear view

Maintain a stable environment in your rimless aquarium with the XP Aqua Sumpless 2 Auto Top Off System – the simple and effective solution for water level management.

Effortless Aquarium Top-Offs for Sumpless Tanks with XP Aqua Sumpless 2 ATO

Seamlessly Maintain Water Levels in Your Rimless Aquarium with the XP Aqua Sumpless 2

The XP Aqua Sumpless 2 Auto Top Off (ATO) System is the perfect solution for aquariums without sumps. This innovative system combines a stylish overflow box with a dual-optical sensor ATO to ensure your aquarium is always filled to the correct water level.

XP Aqua Sumpless 2 Auto Top Off System with pump

Key Features & Benefits of the XP Aqua Sumpless 2:

  • Sumpless Design: Specifically engineered for aquariums without sumps, making it easy to maintain a stable salinity level for your tank inhabitants.
  • Dual-Sensor Protection: Two precise optical sensors work together to maintain accurate water levels and prevent overfilling, offering double the protection for your rimless aquarium.
  • Surface Skimming: The overflow box doubles as a surface skimmer, efficiently removing the unwanted film from the water's surface.
  • Media Reactor: The overflow box also functions as a media reactor, allowing you to use media like carbon or GFO for additional filtration.
  • Easy Installation: Thanks to its magnetic mount, the overflow box can be easily attached to any aquarium with glass up to 1/2" thick.
  • New and Improved: This second-generation system features updated controller programming and sensor design for added protection and longevity.

XP Aqua Sumpless 2 Auto Top Off System assembled

Specifications:

  • Power Input: 100-240 VAC, 50-60 Hz
  • Cable Length: 6 ft
  • ATO DC Pump Head: 8.2 ft
  • ATO DC Pump Flow Rate: 74 gph
  • ATO DC Pump Power: 4.8 W @ 12 VDC
  • Flexi Overflow Box Dimensions: 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 & Overflow Box): 1/2”

XP Aqua Sumpless 2 Auto Top Off System assembled angled view

What's Included:

  • Duetto 2 Controller with a dual optical sensor
  • Flexi Overflow Box with magnet mount
  • DC ATO Pump
  • DC Flexi Return Pump
  • 90mL AquaFX Clear Blaster Nano Filter Media
  • Tank mount tube bracket
  • 7ft Water Tubing
  • Siphon Break
  • Power Supply

XP Aqua Sumpless 2 Auto Top Off System box rear view

Maintain a stable environment in your rimless aquarium with the XP Aqua Sumpless 2 Auto Top Off System – the simple and effective solution for water level management.

Here's what you can expect with our Angel Aquariums free shipping policy:

  • Effortless Ordering: Place your order and leave the delivery to us!

  • Fast Processing: We typically process orders within 1-2 business days.

  • Standard Shipping Speed: Expect your item(s) to arrive within 3-7 business days after processing.

  • Convenient Tracking: We'll send you a shipment notification with tracking information so you can follow your aquarium's journey to your doorstep.

  • Order Confirmation: Double-check everything! We'll send you a confirmation email after you place your order. Please review it for accuracy and let us know if you have any questions.

Shop with Confidence - Free Returns on Everything!

We understand that shopping online can sometimes mean uncertainty about sizing or fit. That's why we offer free returns on every single purchase, taking the worry out of your shopping experience. If anything isn't perfect, return it for free – no questions asked!

Here's why choosing us with our free return policy is the best:

  • Reduced Risk – Shop freely! Knowing you can return anything for free means you can shop worry free.
  • Peace of Mind – Stress-Free Shopping! Focus on finding the perfect items, we'll handle any returns if needed, ensuring a smooth shopping experience.
  • Shop Smarter, Not Harder! Our free return policy allows you to shop more efficiently, saving you time and money on unnecessary exchanges.

At Angel Aquariums our customers are always first

Here's what sets us apart:

  • Hassle-Free Returns: Enjoy a 30-day easy return policy for peace of mind.
  • Price Beat Guarantee: Found a product cheaper elsewhere online? Let us know! We'll match or beat it.

  • Free Shipping on all orders: We bring the convenience to you, for free (within the contiguous US)!

What is an ATO system?

An ATO (Automatic Top Off) system is a device that automatically replenishes evaporated water in an aquarium, maintaining a consistent water level. It typically consists of a water reservoir, a water level sensor, a pump, and a controller.

Why use an ATO system?

  • Maintains water level: Prevents salinity fluctuations caused by evaporation.
  • Protects equipment: Prevents dry running of pumps and other equipment.
  • Saves time: Eliminates the need for manual water top-offs.
  • Improves water quality: Reduces the frequency of large water changes.

How does an ATO system work?

  • Water level sensing: The sensor monitors the aquarium's water level.
  • Pump activation: When the water level drops below a preset point, the pump is activated.
  • Water replenishment: The pump transfers water from the reservoir to the aquarium until the desired level is reached.

How do i know which ATO system i need?

  • Tank size: Select a system with a suitable reservoir capacity and pump flow rate.
  • Water quality: Consider the type of water you'll use and the system's compatibility.
  • Features: Evaluate options like multiple sensors, alarms, and adjustable settings.
  • Budget: Determine your spending limit for the ATO system.

What does maintenance look like?

  • Reservoir cleaning: Regularly clean the reservoir to prevent algae growth.
  • Sensor calibration: Check sensor accuracy and calibrate if needed.
  • Pump inspection: Inspect the pump for wear and tear.
  • Water quality: Maintain good water quality in the reservoir.

What is an ATO reservoir tank? and what do i need to know?

An ATO reservoir tank is a container used to store water for an automatic top-off system. It typically has a larger capacity than the daily evaporation rate of the aquarium to minimize refilling frequency.

Choosing an ATO reservoir tank

  • Size: Select a reservoir with sufficient capacity for your aquarium's evaporation rate.
  • Material: Consider using a clear or translucent material to monitor water level.
  • Lid: A lid helps prevent dust and debris from entering the water.
  • Placement: Choose a location that is easily accessible and allows for proper water drainage.

ATO reservoir tank maintenance

  • Cleaning: Regularly clean the reservoir to prevent algae growth and buildup.
  • Water quality: Maintain good water quality in the reservoir by using deionized or RO water.
  • Lid inspection: Ensure the lid is securely closed to prevent contamination.