So here is the 15 minute temperature setup.
By rgostlin at 2011-06-24
Here you can see the temperature probe stuck to the side of the carboy with an elastic band. Also the water makes for a great air lock. On the left you can see the through hull to return the water to the cooler.
By...
So I had an old mini fridge lying around that I was going to convert to chill a fermenting chamber until I hit a refrigeration line pulling it apart.
I had already made my lager starter yeast the day before and needed a temperature controlled environment quickly. I had an old water cooler in...
I took my immersion chiller and made a DIY counterflow chiller. This is a closeup of the connection. Basically just a 1/2" copper elbow drilled out and the copper tube is shoved through and soldered shut.
Cold tap water through the garden hose, hot wort through the inner copper tubing...