Originally Posted by Yooper
Fermentation is over before lagering is begun, so it won't produce more co2 at those cold temperatures. You would still use the diacetyl rest temperature (generally in the 60s for most lagers).
I really really hate those calculators by the way! They have you carb "to style", which in some ways can be helpful. But they may tell you that an English pale ale should be .75 volumes, while a lambic should be 4.6 volumes. That means the EPA would be totally flat, while the lambic would cause bottle bombs if carbed that highly!
I like almost all of my bottled beers carbed at about 2.6-2.7 volumes anyway, regardless of style, so I use 1 ounce of corn sugar per gallon of finished beer for almost all of my beers.
I agree that u can't use it blindly but they are helpful on many occasions. I carb between 1.8 to 3 volume of co2, not really per style but close