You can add water without doing anything special if there are no pips. I would take the time to candle too.@HappyChooks /@Sally Sunshine
Humidity down to 66% and falling at the rate of 1% every hour. Day 20 starts in 2 hrs from now. Since none of my eggs have pipped so far, is it safe to open the bator quickly to add water and close it right away?
The trick with this is to be calm and efficient. "Quickly" can be bad--you do not want to smash any eggs hurrying when you do not need to.
One last pointer:
Use water that is as hot as you can get from the faucet and then microwave it to get it hotter.