OK, I know the numbers I get from BeerSmith or anywhere else are just estimates, but bear with me...
My latest brew is close to finishing. I was at 1.013 yesterday with 14 quarts in my Catalyst fermenter. BeerSmith projects a finish of 1.011. I removed a quart of trub via the Mason jar and replaced it with a quart of RO water to avoid adding O2 when I replaced the jar and reopened the valve. If my math is right, this reduced my SG from 1.013 to 1.012. Did I also change my FG from 1.011 to 1.010? I think so. Am I missing something?
My latest brew is close to finishing. I was at 1.013 yesterday with 14 quarts in my Catalyst fermenter. BeerSmith projects a finish of 1.011. I removed a quart of trub via the Mason jar and replaced it with a quart of RO water to avoid adding O2 when I replaced the jar and reopened the valve. If my math is right, this reduced my SG from 1.013 to 1.012. Did I also change my FG from 1.011 to 1.010? I think so. Am I missing something?