Re: TREAT or FEED
I am not well versed on single deep hive management techniques but I don't know that it makes a lot of difference. I feed when the the dearth starts and start treating at the end of July. Here in Richmond, the nectar flow stops cold around the 4th of July, so light hives and hives that I have split from get fed. In that regard, I feed and then treat. But local conditions should dictate what you do. If you have a fall flow, you might find yourself treating as soon as the honey supers come off, then feeding to get plenty in the deeps, and putting the supers back on in August.
Thankfully, the bees are smarter than I am. They are doing well, in spite of my efforts to help them.