HYDROS Activate Water Change Mode

Sometimes, one may want to allow the WaveEngine to control the flow pumps in our tank but have a third-party controller tell the WaveEngine to start the Water Change Mode.

It brings the best of both worlds into one. Allow the WaveEngine to do what it does best while triggering the Water Change mode with a click of a SINGLE button.

What you will need to get started

3rd party controller with an available 0-10V port (Ethernet) and the latest firmware installed
HYDROS APX Link Cable ^[1]

Step 1: Connecting the APX Link Cable

Attach the APX Link Cable GX-12 connector end to the WaveEngine’s 0-10V IN port.
Connect the other end of the APX Link Cable (ethernet) to one of your APEX VS Ports.

TIP: The APX Link Cable has two Ethernet connectors. When programming the WaveEngine, select one of the two Input Ports based on the cable end attached to your APEX controller.

WHITE: 0-10V Input 1 & 2
BLACK: 0-10V Input 3 & 4

Step 2: Configure your APEX

Go into your APEX Fusion interface and select the VS port based on the physical port where you connected the APX Link Cable to the APEX.
Click on the “Gear” icon to the right of the name to enter the “Output Configuration” screen.
Under CONTROL TYPE, select “Advanced.”
If you are using one of the APEX Feed Modes to activate your water change sequence, enter the following:
```
Set 0

If FeedB 000 Then 30
```
The 30 is the voltage number you want the VS port to send out, assuming that FeedB is your water change trigger.
If you are using a Virtual Outlet called Water_Change to activate your water change sequence, enter the following:
```
Set 0

If Output Water_Change = ON Then 30
```
“Output Water_Change” is the Virtual Outlet you are using to trigger the sequence. 30 is the voltage number you want the VS port to send out, assuming that the Water_Change outlet is turned ON.

Step 3: Configure the WaveEngine

Start the HYDROS App and go into the OPTIONS screen.

Change MODE CONTROL INPUT to the 0-10V Input you use based on how you connected the APX Link Cable to your APEX. (See the TIP Box above ^[2])

Go into the MODES screen and tap on WATER CHANGE.

Set the mode’s INPUT VOLTAGE to three (3).
Set MODE TIMEOUT to 00:00:00 because we are still determining how long it will take us to finish the water change.
Set EXIT DELAY to 00:02:00.
WARNING: If a pump is installed high, it may become exposed when all water movement stops. This setting will add a delay-exit time AFTER the mode has been deactivated. The WaveEngine will wait 2 minutes before deactivating the Water Change mode and returning to normal operation.
Select an LED COLOR in the mode configuration screen, and the WaveEngine will display it while the Water Change Mode is active!

Step 4: Save your configuration

Tap the yellow bottom band to upload your changes to the cloud and the WaveEngine.

Now you can activate your Water Change Mode on your APEX. It will send a 20-volt signal to the WaveEngine, which will match the voltage to the Water Change Mode and activate it.