krausen and no krausen

[ArrowheadAles]

So I made a ten gallon batch of Belgian Strong ale and split into two fermenters. However I pitched the yeast prior to racking to primary. Both fermenters exploded with activity within 4 hrs and continued for about 3 days or so and both have completely stopped bubbling through the blow off. The only difference is that one still has a thick krausen on top and the other has NOTHING! I have yet to take a gravity reading from either bit am wondering why the difference if they are both the exact same beer and yeast amounts in different containers?

 

[lumpher]

exact same kind of fermenters or different? if different, aeration will be different

 

[eastoak]

the krausen on one dropped before the other, not that unusual.

 

[ArrowheadAles]

Same fermenters. I only ask because it's so soon it seems like. I'll take a reading tomorrow and see what's up.