Took the first SG and then waited for it to go down to .990 before placing into the secondary fermenter. In doing this I found that some of the wines are going to be a little light in the alcohol percent. Now that it is in the secondary and down to .990, how do I get more alcohol percent? If so, is there a way to measure alcohol now that yeast has been added from the first time? Please help,,, thanks a million for all info.