similar concern
I have 11 gallons of Zin must from my crush. Per the book 'from Vines to Wines' he recommends using 1 Campden tablet per gallon (I have a PH of 3.4, Brix 25.2) to get 50ppm. After adding, I read the label which stated 'ea tablet contains 150ppm total SO2'. Did I add 3 times the...