Need help with 5.5 gal of merlot juice

[Guthrie]

I have 5.5 gallons of merlot juice that is unpasteurized, should I add campden tablets to it and if so is it one for every gallon and then let the juice sit for 24 hours covered with a towel before pitching the yeast?

 

[novalou]

If it freshly squeezed, then yes. If you bought it from a supplier, the may already dosed it.