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Derby City Aquatics



Regular price $89.99 USD
Regular price Sale price $89.99 USD
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The IceCap ATO EZ is a reliable triple optical sensor Auto Top Off management system that monitors and automates refilling evaporated water. Includes everything needed to install and operate.

Replenish Evaporated Water... with Confidence!

The IceCap ATO EZ System is an easy-to-use pump and sensor combo that offers peace of mind when replenishing evaporated water to an aquarium. Its twin optical sensors extend the device’s life and reliability by limiting the frequent powering on and off of the refill pump. This system also includes a third (safety) sensor that provides another level of security to prevent overflows.

The IceCap ATO EZ is a well-thought-out automated system with a fail-safe design that uses two (2) optical sensors to monitor the fluid level of your aquarium or sump. The third optical sensor provides real-time protection against the failure of the second sensor. Best of all, it is very easy to install and contains no moving parts that can fail.

Complete Auto Water Top-off System for Fresh and Marine Aquariums

Everything is provided for installation and operation. You simply move the magnet optical sensor to the desired water level within your sump or aquarium. It’s that easy!

ATO EZ Features:


ATO EZ Includes:


Optical Water Level Sensor with Magnet Mount


DC Refill Water Pump


Power Supply


6.5ft of Water Tubing


Universal Tubing Holder


Siphon Breaker


ATO EZ Operation

When the water level in the sump or aquarium drops below the LOW LEVEL (3) on the sensor, it will blink blue until the water level rises to the NORMAL LEVEL (2).

When the NORMAL water level resumes, a solid blue light will display.

SAFETY LEVEL SENSOR (1) is a backup to shut down the feed pump in case of a malfunction; in this case, a red light will flash.


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/6ft

STEP 1 - Mount the Sensor

Install the sensor with the cord directed upwards into the aquarium or in the last chamber of the sump. Next, move the sensor so the desired water level sits between the second and third inner sensors. Mounts to clear, tinted, or painted surfaces up to 1/2in thick.

STEP 2 - Install Refill Pump

Attach the hose to the output of the fill pump and place it upright into the reservoir. Run the hose vertically to the sump or aquarium without kinks. Do not exceed 6ft total length. Plug the end of the pump chord into the port labeled PUMP on the sensor connection.

STEP 3 - Connect to Power

Attach the power connection to the POWER port located on the sensor connection. Then attach the power adapter to a standard AC wall outlet. The installation of the IceCap ATO EZ is complete.




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