Hi guys. I made a great stout a week ago, and yesterday when I racked it into the carboy I wound up with about 4.5 gallons. I don't think I lost that much when racking, so I'm beginning to wonder if I forgot to top off my fermenting bucket after I added the wort to bring it up to 5 gallons. So my question is am I better off just leaving it alone, or should I add a half gallon of water to the carboy? Thanks!