I have made starters quite a few times by just shaking the container whenever I thought about it. I built a stir pate and have some yeast on it I washed in october of 2010. it has been going for about 10 hours now and I see nothing. When I just shook the container it would foam up and eventually I would get a kraussen and yeast sediment in the bottom. with this spinning how can I tell when it is ready or even if it has taken off?