Black Spanish grapes getting close

The brix is only 15, but color is looking good.  I’m hoping the brix will get up to at least 20, but this is the first year of fruiting.  These vines were three years old when I got them, with great root systems.  Second year in the vineyard.  I tried to limit the fruit this year to only 2-3 bunches per vine, but as you can see, more grew on some vines.