I have a 5 gallon primary (plastic) and a 6 gallon secondary (glass). My question is this ... if I use more malt in my wort can I add a gallon of water when I rack to the secondary to increase the volume of my final beer without seriously affecting the final flavor? My desire is to make enough in a batch to keg close to 5 G and still have a gallon or so to bottle (for friends and family.) Is this a really bad idea?