so my first brew is in its second day in the fermenter and it has stopped bubbling. i searched and found out that it could be finished, but that i needed to take a FG reading several times to actually find out. the kit i bought from my LHBS specifies an original gravity of 1.047, (IBU's 23.6 color 21.5 SRM i dont think these affect FG) and and alcohol content of 4.5%. but no FG. i know the ABV correlates with the FG in some way but i dont know how. any help suggestions would be great thanks
Determining FG
- Thread starter Kramman
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If you post your recipe along with the yeast you used, we can make a good guess. Usually, the final gravity is approx. 25% of the original gravity.
That yeast is not very high attenuating yeast and it leaves some residual sweetness, so I would expect a fg of around 1.014-1.016.
bubbles in the airlock don't really mean anything. if the room temperature increases 4 degrees, CO2 is gonna come out of solution and will bubble the airlock.
vibrations from a truck driving by outside can cause the airlock to bubble.
but a hydrometer reading cannot lie (assuming your hydro is calibrated).
Yooper's estimated FG range looks right to me. a drier yeast strain might have pushed you down to 1.010 but that's about it.
vibrations from a truck driving by outside can cause the airlock to bubble.
but a hydrometer reading cannot lie (assuming your hydro is calibrated).
Yooper's estimated FG range looks right to me. a drier yeast strain might have pushed you down to 1.010 but that's about it.
