Re: hive top feeders
I built some of the Miller style top feeders from the free plans Beesource offered here:
I think the screen as in the plans is a much better option than floats.
I normally use top entrances, and built one into the feeders I built. However, after watching the bee activity on the hive I was feeding, I became concerned that the easy access to the feeder was possibly allowing robbing. I stopped feeding shortly thereafter and that hive is doing well, but I plan to modify those feeders to block the top entrance. I will use a bottom entrance in the future while using a top feeder.
USDA Zone 7A Elevation 1400 ft