WLP800 Pilsner Lager Yeast:
Classic pilsner strain from the premier pilsner producer in the Czech Republic. Somewhat dry with a malty finish, this yeast is best suited for European pilsner production.
Flocculation: Medium to High
Optimum Fermentation Temperature: 50-55°F
Alcohol Tolerance: Medium
Uh my limited experience with lager yeast is that when and if it is making Krausen,
It would be normally outgassing thru your airlock in some manner. This strain
is said to be med/high flocculation and I am having trouble getting my mind around
stuff being on the surface of your fermenter with a bottom fermenting strain of yeast...
others may chime in....you have a photo???