ATO EZ Auto Top Off System

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$89.99 $89.99

Discontinued by Bulk Reef Supply
- +

A plug and play auto top off system with redundancy

  • Easy to install
  • Reliable and fail-safe design with three optical sensors
  • Compact & magnetically mounted sensor housing
  • real-time protection against overflows and malfunctions
  • Status indicator lights to see status at a glance


The IceCap ATO EZ System includes a pump and sensor combo that offers peace of mind with its fail-safe design. The twin optical sensors minimize the frequent powering on and off of the refill pump, extending its life and reliability. Additionally, a third safety sensor provides an extra level of protection against overflows.

Installation is a breeze - simply move the magnet optical sensor to the desired water level in the return section of your sump and install the pump in your favorite ATO reservoir with the supplied tubing and accessories. 

When the water level drops below the bottom low-level sensor, it blinks blue until the water level rises to the middle normal level sensor, at which point a solid blue light displays. The top safety level sensor acts as a backup, shutting down the feed pump and flashing a red light in case of a malfunction.


Water Pump Specifications

  • Brushless DC Water Pump (30000hrs)
  • Dimensions: 1.5 x 1.5 x 1.5in
  • Maximum Head: ~6ft
  • Flow Rate: 50gph
  • Power: 5w
  • Tubing Size: ID 6.5mm/OD 8mm

What's in the Box

  • Optical Water Level Sensor with Magnet Mount
  • DC Refill Water Pump
  • Power Supply
  • 6.5ft of Water Tubing
  • Universal Tubing Holder
  • Siphon Breaker
More Information
UPC 6974415980377
Manuals ATO EZ Installation Diagram
Dimensions 1.5 x 1.5 x 1.5in
Included Mounting Magnetic, Hang On/Bracket
Control Type Preset Plug & Play (No Controls)
Pump Included Yes
Pump Model Brushless DC Water Pump
Flow Rate 50 GPH
Tubing Inside Diameter 1/4 in. (0.25" / 6.35mm)
Power Type DC
Power Consumption 5 watts
Water Level Detection Optical Sensor
Alarms Visual
Safety Features Includes Anti-Siphon Valve
Max Head Height 5 -10 Feet
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Product Questions

Will this work for a nano tank or is it designed more towards sumps. Thanks
Question by: Yaset on May 3, 2023, 6:21 PM
This will work great with any small tank or sump!
Answer by: William Reed (BRS Staff) on Jun 2, 2023, 10:12 AM