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FG and OG

So why are my FG and OG never like NB’s?

1: hydrometer is not accurate. A few years back the local club did a calibration night. Out of 10 or so hydrometers, only 1 was accurate.

2: Your volumes are off. Even 1quart can make a big difference in the reading.

3: If you are topping off the fermenter with water, the wort isn’t getting mix well enough for an accurate reading.

4: NB’s numbers are not correct.

How far off are you?

If the OG is 1.048 by NB readings I am always around 1.040.

do you add water to reach your desired volume after the boil?

Extract or all-grain?

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