Good ideas. I think I'm going to look into a 100# tank. One of the reasons it took so long was the boil would stop and start because the tank would freeze up. I think it'll be more consistent even if we turn the pressure down, if we get a bigger tank or leave it in a bucket of water. And I think you are right - we did six 5 gallon sessions at once so I probably would use close to two tanks on those.