I have been doing 5 gallon BIAB and just did a 10 gallon BAIB with a 28# grain bill. That was pushing it with not much room to spare. I want to increase my batch size and go to a mash tun. What is the largest batch size you have done and what is possible? I have a custom connical that is sectional and I could go up to 50 gallons. I am not saying that I will do 50 gallons but I would like to try it one day just to see if I could.