i really have to say, that video is not something i would be proud of, or posted on you tube....just my HO. further, it's unfortunate that beginning beeks will follow or try this, with detrimental results.
jen, would never add or use powdered sugar. would most likely not open a hive at 30 degrees and keep the lid off the way he did, and wouldn't feed them the little amount of 'slop' he did. just my HO. i see this stuff sometimes.....well.....
what iddee said and what the 'wizard' (lol) (MM) said. MM is right on about leaving the bees enough stores to get them through until march. if that means feeding them in the fall to get them heavy or leaving an extra super on, so be it, better than what is shown in this video.
and even when we do all the right things to ensure the hives are heavy, we lose our bees for other reasons. but this video is not an appropriate way to feed bees, again my HO.