Hi All/ Michael Michael - you mention that you feed HFCS and have no problems with fermentation and mold. I know a little about the production of this product - but not enough. I know that HFCS is usually produced by an enzymatic degradation of corn, at a number of very big factories in the American Midwest. (there are some big plants elsewhere in the planet but I think these are the largest). Theoretically the enzymes converting the corn to syrup must have an optimum ph - I would geuss that it would be in the range of maybe pH 5 - 6 on the high side, probably lower. So that would mean that HFCS probably has a ph that inhibits growth - a reason some people may have noticed bees being healthier on it. Anybody able to take the ph of HFCS? Keep well Garth Garth Cambray Camdini Apiaries 15 Park Road Grahamstown Apis mellifera capensis 6139 South Africa Time = Honey If you are not living on the edge you are taking up too much space!!