I am in the process of building my HERMS system and I am in need of some help, I am looking for the best way to control the temperature in my mash tun. I've seen that people will put a temperature control either in the HLT or in the wort coming out of my 50' copper tubing. I've got propane and pretty 2nd hand burners with no pilots.
What products do people use for this and what have you found to be the best method of controlling temperature in a HERMS system?
Thanks any suggestions are greatly appreciated.