I brewed a 5.7 gallon batch (fermenter volume) of 1.070 and will be adding 0.5 gallons of cherry juice. I will need to take a hydrometer reading of the juice but let's say its 1.050. Am I thinking about this correctly? Wort: 70 gravity points x 5.7 gallons = 399 gravity points Juice: 50 gravity points x 0.5 gallons = 25 gravity points Total: 424 gravity points / 6.2 gallons = 68.39 gravity points So the actual OG of the beer + juice = 1.068?

Added the juice this morning. The gravity of the juice was actually 1.084 so I got an unexpected boost in overall OG.

That’s how I see it @Craigerrr, but then again, I’m in at least one of those phases, so I may not be as capabale of diagnosing.