No. I adjust acid by taste before bottling. I'm not sure I could adjust acid pre-fermentation, even if I wanted to.@winemaker81 …….So if i understand what you are saying, taste the musk to see if i need to add lemon juice or not? If it has good peach flavor but it is insipid probably so. Will adding Lemon juice on the secondary fermentation hurt anything if it is tasting flat at that point.
I do a lot less initial correction than a lot of folks. I used pH test strips, and if the pH was between 3.1 and 3.8, I didn't usually adjust acid before fermentation.
Last fall I purchased a pH meter (yeah, finally moving into the 21st century), but my overall methodology will remain the same.