Originally Posted by saramc
I would think you will get a better flavor by topping up with addition grape juice, OJ, or a blend. I never, ever top up with water.
I don't know if it's applicable to this wine but I've seen many country-wine recipes (both in books and on the internet) that use up to a gallon of water infused with fruit. Using water is not necessarily an issue if the recipe is already providing a lot of flavour.