Got a brew of a modified coppers dark ale on to brew. Iv got a few questions that I really should know the answers to :s first off I need to test the fg for the next three days to make sure its done. When testing how do i read the gravity with that annoying foam on top? Second.... what should my fg be around if my og was 1.045.And third..... Do I pour the beer iv just tested back into the fg? Surely there is a risk of contamination isn't there. Thanks in advance