Is the water circulating?
No. The water will naturally circulate due to natural convection by temperature differences in the water. And a crock pot heats pretty evenly along the bottom so as long as I don't overfill the thing I should be good.
I was just running a auto-tune with the PID to get it to "learn" the way the crock pot heats water. No food in there yet.
The PID is my old one out of my PTG and the crock pot is an old one that my wife does not use. My initial investment is $0
If it works good then I will get a project box to put the PID in to make things proper. I also wired the PID with a electrical plug so any crock pot or cooker can just plug right in.
So I think my first try will be a dry-aged steak this weekend with a finish sear on the grill.