I do that too, it also helps to remove some of the hop matter that gets stuck to the sides during the hot break. I really like the use of fermcap too.
I usually don't lower the propane though.
BL, CL, Miller etc. is like makin love in a canoe.....
its fkin close to water.
Lagering/conditioning: German pils, Dortmunder
Lagering:Kolsch, Dusseldorf alt
American Amber, Red ale
Double ipa, Rye ipa
Fermenting: German pils
Wheat 1,Wheat 2
All to be kegged and served by May 10