I want to use an immersion chiller as a HERMS. Sit it in the HLT for keeping mash at temps (possibly) and use to chill wort at the end of the boil (sit the IC in an ice bath within the HLT and pump the wort thru it and back to the BK). Since I will be running the wort thru the chiller itself, wouldn't stainless be better?
Something like this?
Something like this?