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AutoAqua Smart AWC Duo - Auto Water Change + ATO

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AutoAqua Smart AWC Duo - Auto Water Change + ATO

Innovative Dual-Function Automatic Water Changer with Auto Top Off

Automate your water changes and top off evaporated water with ease. Sit back and watch your aquarium flourish while saving time in the process. Easy to install and includes everything to operate.

Making Water Changes Simple and Smart

The AWC is a Dual function Auto Water Changer and Auto Top Off (AWC/ATO) touch screen controller that automates water changes and replenishes evaporated water with ease. Simple to install and includes everything needed to operate the AWC with ATO function. Smart AWC Duo’s two patented optical dual sensors and a touch screen can perform a water change and water top off with ease. 

A New Experience

The intuitive touch screen interface saves you from complicated settings and allows you to complete multiple tasks effortlessly. You can use the Smart AWC Duo with saltwater or freshwater applications and on aquariums of all sizes. This smart device makes water changes effortless.

Precise Detection with Double the Protection

The Smart AWC Duo has two patented optical dual sensors, so if the primary sensor is defective, the failsafe sensor will take over and prevent over filling or over-drain water from the aquarium. The easy-to-install magnetic dual optical sensors can detect the water level precisely and ensure an accurate water change and filling volume.

Integrated with Safety Technology

The unique Quick Security Technology (QST) protects the aquarium by spotting potential failure situations to prevent any disaster. The built-in audible alarm will alert you within seconds of an accident. 


Key Features

  • Dual Function Auto Water Change/Auto Top Off
  • Easy Touch Screen Controller Display
  • Simple User Interface
  • Quick Security Technology
  • Optical Level Sensors with Magnet Mounts 
  • Everything is Included!



- Power Input: 100-240 VAC 50-60 Hz
- Power: 4.5 W @ DC 12 V
- Power Cord Length: 6 ft (180 cm)

DC Pump:
- Head: 8.2 ft (250 cm)
- Flow Rate: 74 gph (280 lph)
- Pump Cord Length: 6 ft (180 cm)

Max. Mounting Thickness:
- Sensor: 1/2 inch (12.7 mm)
- Universal Tube Holder: 1/2 inch (12.7 mm)


Water Change Interval:
Minimum: 1 hour - Maximum: 99 days

Length of Cable Between Sensor and Controller: 10 ft (300 cm)
Flexible Tubing: 6 m (ID: 6.5 mm / OD: 9.0 mm)


What's Included 

  • Smart AWC Duo Controller x1
  • Power Adapter x1
  • DC Refill Pump x3
  • Universal Tube Holder x3
  • Siphon Break x3
  • Tubing 19.6 ft (600 cm) x1



7 Reviews

  • 5
    Smart AWC + ATO

    Posted by DSwanO on Mar 25th 2024

    I've had the unit running for a little over a week with 1% daily water changes and a solenoid on the ATO directly from my RODI system into my 120 gallon reef tank sump. I know it's an early review but I am thrilled to have it. I've been doing the 5 gallon bucket shuffle every week for water changes for over 12 years. I couldn't be happier.

  • 5
    Made my life easier and fish happier

    Posted by Bruce on Dec 13th 2023

    It’s great. I just push a button everyday and 10% of the water is removed and replaced. Fish are spunky and happy.

  • 5
    Just what I needed

    Posted by Adam on Aug 31st 2023

    Works as intended. Thank you

  • 4
    Good for the money

    Posted by Jim on May 16th 2023

    This system is good for the money, works as intended and is fairly user friendly. The only problem I have with this system is that you are very limited by its pump size. An auto water change system should be expected to be able to use larger pumps for larger water change tanks. The head height on these pumps still means you’ll be hauling water. Make this with just power plugins, so that you can choose your own pump, as well as an app, and this would be 5 stars all day long.

  • 5
    Product has literally changed my life

    Posted by Alex on Jun 21st 2022

    Being a reefkeeper/planted tank keeper for over 10 years, I honestly thought this product was total BS and too good to be true. Not the case... No more are the days of bucket hauling, towels everywhere, and constantly cleaning the glass or pre-heating water. I can now spend more time focused on testing parameters and enjoying my tanks versus maintenance.<br>The most important thing to me is that this creates a CONSISTENT environment with stable water change intervals and rates. This allows me to perform a 3% water change a day (I decided what volume I wanted to do) with literally no hassle besides initial setup.<br>LOVE this product.

  • 4
    Timer need improvement

    Posted by Awc on Apr 27th 2022

    Overall it’s a good system.The timer needs to be chanced to work with a app or Bluetooth for adjusting.

  • 5
    Game Changer

    Posted by Scott on Apr 21st 2022

    I think with most reef aquarium hobbyist, it’s very hard to stay on top of water changes. In short, my ATO float valve failed so my tank was struggling so I was looking for an alternative and came across this. I’m telling you, just keep your buckets filled and it does the work. Total game changer and very worth the price. My corals have never looked better.