Okay- I am having a brewfest at the house on Oct 2nd- Several brewers, multiple styles. At the end, I am planning on fermenting a California Common/Steam Beer using Wyeast California Lager 2112 and an Oatmeal Stout using Wyeast London ESB 1968. I have a fridge with a controller heat/cool. My concern is that the steam recommends 60 and the stout recommends 68 degrees for fermentation. Is there as a safe medium or should I reconfigure the brew day for beers that ferment at the same temps?
The median is 64F for the CC yeast and 68F for the stout yeast but I would go with Sean’s recommendation and ferment the CC on the cool side at 58F and get a swamp cooler to ferment the stout at 64ish. This way you’ll be sure to get some clean CC and a creamy smooth Stout.
I agree with suggested temps.
Cal Common to start at 58F and Stout at 65F.
So answer on your question is “No you can not ferment then in the same chamber”.