I've been brewing since the early 1990's, but this is the 1st time that I've ever made a kolsch. Brewing went as planned and I did not use a starter, but pitched an XL Wyeast 2565 pack. I put the 6.5 gallon carboy filled with 5 gallons of my wort in my basement at 61F. The next morning right before work I noticed that it was really rocking, but I did not see anything that concerned me. I came home that evening and I had mega-brains yeast all over the floor. I cleaned it up the best I could, removed and cleaned the airlock, and let it continue. Note to self.....use a blow off tube anytime I use 2565 again no matter how big my carboy is. :cross: