I raise my own queens so I have 20 some 3 to 4 frame nucleus hives. We are in a hot (high 90's) and a dearth so bees should take syrup really fast. I have frame feeders and just put a quart in at a time so it will not be wasted. a few colonies take it but most do not take it. I use a 1:1 mixture of sugar to water. Is this nosema? Suggestions?