But these are not losses. The only loss is the liquid below the tap, and they have a field for it "Lauter Dead Space". I just want that during the calculation of the the water amount for mashing it will consider not only the Water/grain ration (mash thickness) but also the water that is under...

I do not think it solves my problem. The "Kauter Dead Space" field is described there as "Amount of liquid left behind in your lauter/mash tun in quarts or liters. For fly spargers, enter the average amount left behind after rinsing." This is not water left after rinsing. This is water under...

In my setup, I have +-1.3gl of water under false bottom. I add this amount of water to my strike water for the mash just like I read that many people do online. This works great for me. I cant find an option to enter the amount of water under the false bottom here though. I made my first beer...