Oh my god!!!!
I never expected this. Last night at about 8:00 I pitched the cake into the starter in my one gallon plastic "carboy", gave it a good shake and set it on the counter. I did not touch it until I got home today about 3:00. I meant to swirl it before work but ran out and forgot about it.
I would say I have a healthy population eh?
The krausen is indeed all the way to the top.