Originally Posted by day_trippr
I suspect the typical fridge thermostat has a larger differential than what can be achieved through other facilities.
I have two fridges and a keezer in my brewery and they all use external controllers with probes attached to the sides of carboys or kegs and covered with inch thick closed cell foam. I can set the controllers for as little as one degree of differential without constant cycling. The actual air temperature within these units is likely all over the map, but it's the beer temperature that's important...
here, here.. I understand and do the same thing.
I didn't realize you could control the temp to 63-68 degrees on a upright freezer without some kind of external temp controller. (I don't have one to know this.)
Yes you are right it is the beer temp that is important. I have multiple (3) other thermometers in my fridge and the temps vary. Kinda stinks when I start putting four 5 gal buckets in there over the coarse of a few months. the ones I just put in need the most attention but it can kinda play games with the others. lol
I had left the probe on a brew that was sitting for 2 weeks then put a new brew in and just put a temp probe on it and it went up to 77 before I swapped the temp controller probe over. but then I felt like the others where getting chilly. ugh. can't please all the yeast but we try!