Holy cow! Maybe this is the problem that I've been having with my March 809 pump during the last couple of brew sessions. I see that that pump head is indeed installed upside down, and I can easily fix that. Although, I'm not sure that is all that's going on.
Everything is running fine (even...
A couple of things come to mind for me personally regarding this conversation. I also use a stir plate and a 2L flask for the starter. Before I add the yeast to the starter, I shake the crap out of it in the flask with a stopper on the top. When you unplug the stopper, you can tell that a...