i have a 17 lb tank and it has lasted about 4 batches, but i also use it to heat water for my mash tun, then i heat water for my mash in, then i will do some decoctions with it, then turn around and heat 3-4 more gallons for spargining then use it to boil wort for an hour. this is just about every batch i make. i didnt think i was going to make it threw my last batch this weekend but it did im pretty sure it needs to be refilled by now lol.
Автомат Калашникова Brewing Co.
Beer and Kalashnikov since 2007