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Where a permanent pool is present in the wetland, only a single background concentration C* applies. The parameters for C** and Threshold Hydraulic Loading will only be enabled when the permanent pool volume is set to zero.
Note: Advanced Properties are uneditable by default. You can make it editable for each project by clicking on Edit and Project Options. This will present you with a Project Options Screen as displayed below:
Now, click on MUSICX Treatment Node Settings and tick on Editable as shown above.