One tip on separating yeast in the fridge, don’t let it sit in the fridge overnight. Since the yeast in suspension will eventually settle on top of the trub. It may look pretty cool in the growler, to see all the gradations of trub and yeast. But all it does is forces you to start from scratch, putting everything back in suspension. The lesson I learned is don’t rack beer at 1:00 am, since more then likely you won’t be up at 4:00 am to separate out the yeast in suspension from the trub.