Originally Posted by Rhino
Should I add the sulfites now or the next time I rack it?
You can probably wait until you rack it, unless you think it really needs it now. I usually add one campden tablet per gallon at the making of the must, and then at every other racking. I don't have an SO2 meter, so that's my "guestimation" of trying to keep the wine at approx 50 ppm.