cadarnell
Well-Known Member
I top off my all grain beers. Which is the most accurate and trustworthy hydrometer reading ... pre boil or post boil after topping off?
Post boil but before top off is most accurate, but you have to know how to do the math to account for your top off water if you are trying to determine your OG.
And yes. You are right with your math (apart from the spelling of divide).
-a.
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