I've always added defoamer to my wort to prevent boil-overs, and I love the results. Now, for the first time, I'm doing a primary ferment in a 6 gallon Better Bottle due to the fact that all 4 of my buckets have beer in them(!). So for the first time in over a hundred gallons brewed, I get to see primary fermentation! I pitched 2 packets of S-04 into a 1.067 OG AG Oatmeal Stout. Fermentation began in 6 hours, and it's going like gangbusters, but I have no krausen! Is that because of the defoamer I used in the boil?