I do my larger at around controlled 20deg 1 pack of yeast approx 7days than rack for 3 more an than keg settle for a day or 2 an have never had a problem tastes great even non homebrew drinkers polish it off.. Never tryed it over several weeks or diff teast ferment might be hole lot diff.. Not sure but dnt think to much into it I belive if first it works than play around wit it with next brews if u like it is all that matters.