It's probably been 10 years since I brewed a lager. I'm pretty sure I used to ferment them at 54°, but I was monitoring the air temp in the fridge, so it was probably closer to 57°.
Anyhow, I brewed an Oktoberfest Friday with 2206. I'm fermenting it at 50° with the probe for the temperature controller in a thermowell in the fermenter. There is very little foam on the top of the beer. It doesn't even cover the whole surface. But there are bubbles coming out of the blowoff tube every couple of seconds, so it seems to be fermenting okay.
I just don't remember a beer fermenting with so little foam. Can anybody reassure me?