S05 behaving badly?

[thisjrp4]

I haven't brewed many beers with S05, but it always seems to behave the same for me with normal strength beers - slow fermentation with a small krausen. I have a normal strength brown ale fermenting now, and it blew the airlock off and krausen is running down the side of the fermenter. Is this normal? How should this yeast perform?

 

[Walker]

There are a gazillion things that factor into how your fermentation will go, so it's impossible to say something like "US-05 behaves like <blah blah>".

For example, I use that yeast for probably 90% of what I brew and I decided to drop the temp of my fermentation fridge by 3 degrees earlier this year. This resulted in my krausen turning into a 4 inch tall slimey/gooey looking mass instead of a 1 inch tall bubble-bath looking mass.

Same yeast, same recipe, 3 degree temp difference.

 

[thisjrp4]

That's a pretty good description of the difference I can see. I don't have temp control, just whatever temperatures my basement provides, and it is cooler now so maybe that's it. Thanks!