Yeast making a "wave" out of the trub?

[brewn00b4]

Zombie Dust clone (recipe here) Pitched the yeast around 12 hours ago. I noticed that slowly this layer has started to rise from the bottom of the fermentor. I've never seen this happen before. no real bubbles or airlock action, Is this yeast in lag phase, or is something wrong?

 

[brewn00b4]

Well the layer rose all the way to the top about 15 minutes after that video, everything is bubbling away now

 

[hotbeer]

So you are all happy now? Good. Patience is a must.

 

[GoodTruble]

I've seen something similar, but perhaps with less volume. Everything is just still getting sorted out.