Wed Jul 01, 2015 3:05 am
Well, obviously measuring it is better. Especially if this is the first time you are working with this beer (or even just this yeast). Once you have done it once you can probably guess subsequent times and be ok since you kinda know what is going to happen.
That said, I hear where you are coming from. I would imagine with a good pitch of active yeast that the whole ferment will be 4-5 days, so if you had the temperature rising to hit 72 on day 2 you might be close.
The blulosopher guy did an experiment with raising to different ferment temperatures after pitching at the same temp and found that the differences were minimal. I don't remember which show it was on, but I'm sure you could find it looking back in the archives. I only bring that up because I don't know how much variability you will actually see in the beer if you go up at 20%, 30% or at 50%. You should probably brew it 3 times at those percentages and report the results back here so we know (ok, i'm just kidding...mostly).
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