Hey there, first winter with first hive which was acquired from a nuc last spring. Configuration is full depth brood box on bottom and two 3/4 depth supers on top of that. Although bees filled up both supers with honey in summer, I removed only two frames - being my first season I erred on the side of caution and left them with most of the honey. Treated with Mite Away in late March after noticing average mite numbers on sticky board. Was down at hive a few days ago and noticed significant number of dead bees outside entrance and very little activity. This prompted me to plan an inspection on the next fine day - which was Saturday just been. Was expecting either major robbing, or a mite issue - so went into the hive armed with some Apistan incase mite numbers were up. Opened up top box and was not a single bee in the top super. Most frames in top box were 30-40% capped honey. Second super, a few more bees and much more honey. Almost all frames 70-80% capped honey. Brood box full of clustered bees in good numbers. Didn't want to keep the hive open too long so did a quick cursory brood check - not heaps, but probably a side each of two frames with decent brood pattern - plus c-larvae. Couldn't spot eggs in the light, but will take larvae as sign of queen being present. Here's where I made a snap decision which I'm now unsure about. When closing up the hive I decided not to put the top super back on. As there were no bees in there and a lot of honey in the bottom two boxes - it just seemed like more space they needed to heat over the next six weeks or so of deep winter. Also there is some minor hardware damage to that box which I thought was a good opportunity to take off and repair. I'm wondering if this was a mistake. 1; Should I have left the bees with this super? 2; If removing was okay, am I safe to harvest this honey? - only treatment has been Mite Away in March... Hoping someone can give me some advice here! Thanks so much.