@rosemarythyme - I believe the solution at that amount was meant to help prevent it from freezing if I am not mistaken.
That'd make sense as well. Thankfully sugar solution at the usual 4:1 ratio already has a slightly lower freezing point, so it pretty much stayed liquid from after lunch on, so I stopped swapping out the feeders. But this is why I keep extra feeders on hand - much easier than trying to thaw them out in weather like this.