I have a recipe that has a lot of dry-hops and so upped the water volumes so as to end with a 5 gallon batch. Because the volumes were on the high side for my boil (I have a 7 Gal kettle) I used a half gallon of top off water after the boil to bring up the volume into the fermenter. My question is how does Beersmith 3 calculate the Estimated Original Gravity when using top off water? Is the Estimated OG before top of water is added or after?
I had assumed that it calculated after top off water is added with the final volume of the batch - in this case 5.5 gallons - but that doesn't line up with my measurements. I took two readings, one before adding and one after. The before amount matched the 1.071 that beersmith estimated and then after adding .5 gallons my reading was 1.064. This is pretty much in line with what the Dilution Tool calculates.
So, is this how it is supposed to work or did I blow my OG?
I had assumed that it calculated after top off water is added with the final volume of the batch - in this case 5.5 gallons - but that doesn't line up with my measurements. I took two readings, one before adding and one after. The before amount matched the 1.071 that beersmith estimated and then after adding .5 gallons my reading was 1.064. This is pretty much in line with what the Dilution Tool calculates.
So, is this how it is supposed to work or did I blow my OG?