I've done a couple of all grains now, and was wondering: how long do propane canisters typically last? I had SWMBO pick me up a small propane tank over the weekend in case the worst happened. But I'd rather not test things.
i have a 40lb that i use as my main tank and a 20lb on the BBQ that's always available as a back up. i do all grain 90 min boils (including heating my HLT) at least 3 times a month and have refilled my 40lb tank once since i bought it in september. it lasts a long time. one of these days i'm going to weigh it before and after a session just to get an idea.