Add ATO

An Auto Top Off (ATO) system is a must-have if you own a reef tank. This system automatically replenishes evaporated water from your tank. A water sensor is installed in your main tank, and when the water level drops too low, it activates a pump in a freshwater reservoir. This pump then pumps fresh water into your main system. 

Here is what you’ll need to get started:

• The Water Sensor is installed and configured.  
  
  TIP: If you haven’t set up your water sensor input, please follow the instructions.
• ATO pump physically installed to either a Drive Port or a WiFi Outlet

Step 1: Create the ATO Output

1. From the STATUS screen on your HYDROS app, top on the three horizontal dots to the right of the OUTPUTS label and select “Add / Edit Output.”
2. Tap on the + symbol at the bottom right of the page
3. Type in the name of your new output and then tap “Create.”

Step 2: Configure your ATO

• Family: ATO
• Level Input: Here, you select the Water Sensor input.  If you created a sensor input, it would be listed here.
  
  TIP: To see a list of all inputs available on MULTIPLE devices, you must first create a Collective.  Otherwise, only inputs on the same device will show.
• Output Device: Here, you select the location where the ATO pump is physically connected.
• Power Safe Range: You can set a range of acceptable power usage and receive a notification if the consumption falls outside this range.
  
  WARNING: This option is unavailable if the “Output Device” is assigned a WiFi strip outlet.
• Power Notification Level: You can select the notification level that triggers if the power consumption falls outside the “Power Safe Range.”
  
  WARNING: This option is unavailable if the “Output Device” is assigned a WiFi strip outlet.
• Enable Advanced Settings: If you are an expert, you can customize the default output settings to suit your system better.
  
  • If Input Unavailable: This allows you to specify how the outlet should act if the sensor is not found or is missing.
  • Minimum OFF Time: Allows you to specify what is the minimum time the outlet should be OFF
  • Maximum OFF Time: Allows you to specify what is the maximum time the outlet should be OFF
  • Minimum ON Time: Allows you to specify what is the minimum time the outlet should be ON
  • Maximum ON Time: Allows you to specify what is the maximum time the outlet should be ON
  • Run Past Max ON time: This allows you to specify if you want the outlet to remain ON even if the “Max ON Time” has been exceeded.
  • Notification Level: Allows you to specify the level of notification you want when any of the advanced settings have been exceeded
    
    TIP: You will get notifications when one or more advanced settings have been exceeded.  If you set the Notification Level to NONE, then the particular outlet you configured will not send you any notifications.
• Active Modes: This allows you to select which mode this output will be operational in and which mode should be turned off.
• Depends On: This feature allows you to turn the output based on the status of another output.  To enable this, select it from the list of available outputs.  
  • Dependency Mode: This allows you to turn the output ON or OFF based on the other output.
    • OFF if OFF: Will turn the current output OFF if the output it depends on is OFF.
    • OFF if ON: Will turn the current output OFF when the output it depends on is ON.
    • ON if OFF: Will turn the current output ON when the output it depends on is OFF.
    • ON if ON: Will turn the current output ON when the output it depends on is ON.
• Is Invisible: If you choose to hide the input from the status screen, it will only become visible on pages that have “Show Invisible” selected.

Step 3: Save

• After configuring the Output, tap the yellow bar at the bottom to upload your changes to the cloud and each HYDROS device.

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