Is a thermowell necessary? I'm looking to control temp a bit more accurately, and am not certain I can put the temp probe directly into liquid.
Right now I have a saison with 3724 ripping along at 85F. I have the fermenter in a tub of water and am heating the water with an aquarium heater. I'm not sold on the precision of the dial on the heater for setting temp. I'd prefer to plug the heater into a temp controller.
Basically, I'm just trying to figure out if I can drop the temp sensor from a Ranco (or other controller) directly into the water, or if I need to protect it in a thermowell of some sort.