So I did a batch of Bavarian Hefeweizen and I cooked the wort down to 100 degrees. Then poured it into my bucket. Then I put a lid on it and stuck it in my bathtub with ice packs and water up to the 5 gallon mark on my bucket. Then I let it sit in there till the temperature sticker dropped down to 72 and stayed there for a while before pitching the yeast. Is this the way to do it or do you just let it sit in your bucket/ carboy till it cools to pitching temperature?