Originally Posted by LiquidSnakeRNA
So, curiosity was killing me and I went ahead and measured the Brix.
The original Brix was around 17. The current Brix is at 10. Going by an online calculator, the original OG was approx 1.07 (target was 1.065). The current gravity would be 1.021. What does gravity usually get to when fermentation is done? This thing has only been in the primary for 7 days, so I may get the brix to go lower, right? If it was done fermenting today, it would be estimated 6% ABV.
Wait another week then take an SG reading with the hydrometer. Take another reading three days later. If they are the same FG has been reached. You may want to let the beer condition in the primary a little longer for sediment to drop out.
Hydrometers are much more accurate in the presence of alcohol than a refractometer. Conversion calculators can get you close, but there are still variables to affect the accuracy.
Final Gravity would mainly depend upon the yeast used and the ingredients of the beer. I would consider 1.021, for the beers I typically brew, an incomplete fermentation. It is not to high if the recipe contained an abundance of unfermentable sugars though.