Depending on the fining agents used, they are added either during the boil or in the fermenter after fermentation. ... New homebrewers are often concerned that adding finings may kill the yeast and prevent the beer from becoming carbonated. Beer finings do not kill yeast.

Can you add finings during fermentation?

Finings may be added either at the end of the boil or in the fermenter. ... Finings added in the fermenter are usually added 4-5 days before bottling or racking the beer to give the fining time to precipitate yeasts and proteins and keep these out of the finished bottle or keg.

Do finings affect carbonation?

Re: Fining agents and natural carbonation

The short answer is no. Even if you use gelatin at cold temps, you will have plenty of yeast left in suspension to naturally carbonate with sugar.