Originally Posted by Bigjack68
Well I am going to be using either 16oz or 1 liter bottles so 1 cube would be good for a 16oz or 2 for the 1liter. I'm assuming you were talking about standard 12 oz. bottles...
It depends how much carb you want
A standardish amount is 2.7 vols. That is 4 ounces (114 grams) per 5 gallon batch. A 5 gallon batch has about 50 12 ounce bottles. 114grams/50 bottles = 2.3 grams per 12 ounce bottle. one sugar cube is approximately 3 grams of sugar. so one sugar cube per 12 ounce bottle will somewhat overcarbed compared to my general standard of 2.7vols CO2 per beer.
you mention 16 oz bottles. a 16 oz bottle is 33% larger than a 12 ounce bottle. we determined above that 2.3 grams of sugar is needed per 12 ounce bottle. 2.3 grams * 1.33 = 3 grams = 1 sugar cube.
So it just so happens that 1 sugar cube is almost perfect for a 16 ounce bottle. It is a little too much for a 12 ounce bottle. one liter is about 32 ounces, so 2 cubes would be perfect for a one liter bottle.
i've never done it, but personally i think using sugar cubes in 16 ounce bottles does kind of make sense.