Thanks! It will be sad to see the gosling/duckling duo leave for their new home on Thursday, but I'll get to keep the 2nd duckling pair until the weekend.
Still air styro bators are extremely temperamental, but with close attention can still have good hatches, even if the eggs are not all on the same schedule. Since the humidity in my bator room is 16%, I often bump humidity to 50s around day 24. Then I can get it above 75% faster when I think they are getting ready to internally pip. I'd rather err on the side of bumping humidity too soon than deal with shrink wrap.