I have a few hives that were nucs now in double brood boxes that were slow to build up reserves this summer and fall. I have been giving them syrup (cane sugar and water 1:1 by volume). I have noticed an accumulation of "grit" on the tops of the frames in these hives. The grit is whitish, and hard, and appears almost like the salt on a pretzel. I was out in the field yesterday and I'm sorry I neglected to taste it, but I suspect it is dried sugar left from the bees as they inevitably get some of the syrup on their legs and track it through the hive. Anyone else have this? /Curtis Crowell Hightstown, NJ