So I have a copper immersion chiller. The problem is that my water comes out of the tap at about 74 degrees making it difficult to get the wort below 80. I would get another copper immersion chiller to put in an ice water bath to chill down the water before entering the immersion chiller in the wort, but I don't want to spend that kind of money. What about making something similar out of vinyl tubing. I think I have the logistics figured out, but was wondering if anyone thinks vinyl transfers temperature enough to be effective, or something like copper needs to be used. I'm trying to do this on the cheap.