Hey all. I just started my first brew and im oh so excited, just in the primary now. I brewed an oktoberfest from an extract kit but the yeast was white lab's Dusseldorf Alt (platinum series), which has an optimal fermentation temp of 62-69F. My question is how should I go about brewing a true octoberfest (im assuming a lager yeast) and what is a good way to keep it in the temperature range.