I have the Meglioli Riesling clearing right now.I did the primary fermentation in George's standard 7.9 gallon bucket, raisins and all, with no overflow problems.Starting SG was around 1.085 at 70F, ending was 0.995 at 70F. Fermentation was a bit slow but otherwise normal. The temp only climbed to 74F at it's highest, which seemed a bit low but everything else seemed normal so I didn't worry about it. Bottom line, the 7.9 gallon bucket worked just fine in this case...