While we are on topic of UJSM, another question from a newbie. I pitched a batch of UJSM (5lb split corn, 5 lbs sugar, bakers yeats, about 4 gallons of water) in my sterile carbouy (with bubble cap) and for 4 days it was bubbling nicely. As I am waiting for it to stop so I can run it, I checked it on the morning of the 5th day, and it looks like it is boiling, going crazy! I checked it several times on the 5th day (yesterday) and even this morning it is still "boiling". I have read of this "second fermintation", have I screwed up and not distilled it on the 3-4 days has presecribed by the UJSM? I was under the impression that if it is bubbling it is still producing alcohol, but on the 5th day to get real aggressive?