I have a three tier system,, mash tun, hot liquor with cu coil heat exchanger, and boil. Using my BeerSmith application, let's say it calls for 5 gallons of water for the mash... My mash tun has a false bottom that holds about 1 gallon.. and the tubing, pump, and heat exchanger holds, say another gallon.
My question is in this example should 7 gallons be used to fill all piping etc, mash tun including false bottom,,, or 6 gallons,, filling piping etc. and mash tun with 1 gallon below false bottom and 4 gallons above? My confusion is due to the recycling of the wort to keep temperature thereby exposing the mash to another 2 gallons ( tubing, etc. plus false bottom). Am I thinking too much?
Your thoughts.\
Thanks,Ken