Hello all....
I am new to AS life. I thought it was weird that you don't get gallon readout on your Fresh, Grey and Black tanks. However, it's understandable that AS can use the same sensor for all size tanks. I have a spreadsheet that will convert all that to gallons for you. You just need to change the size tank you have and all over rows will calculate for you.
For example, in our 22 SPort, we have 20 gl. Fresh, 24 gl Grey, and 18 gl Black. If your tanks are different sizes you can just change those three numbers. I left a little spot for dates/times if you want to fill that in when you check your levels if you are on a long stay. I added in some "warning" colors too just to help it look a little nicer.
Here's a screenshot of the file. Excel file is attached.
If you want - you can DM or email me and I can send the file to you or in Numbes if you are on a Mac.