I do not know the ambient humidity of the room I kept the incubator in, but I do know that around here it is not very humid. The incubator has stayed in the same exact room with the same exact temperature and the eggs were hatched one after the other. The scenario of the room did not change...
I thought it was more dry here than it turned out as well but my incubator proved me wrong.
The way to help fight fluctuating temperatures is to wrap a towel around your incubator, but be sure not to cover up ventilation holes. This should insulate your incubator better.
What kind of incubator...
Does the greenhouse stay around the same temperature and humidity all the time? You do not want big fluctuations during development.
The place I live is pretty dry so I was surprised for it to get up to 25-30%.
I was lucky to get up to 30%. Most of the time my incunator ran round 25% and all turned out well.
I am speaking for my icubator and how it worked with dry vs. wet hatch, which is why I mentioned multiple times the kind of incubator I am using.
Mine ran around 25-30% at 100.5 F.
I definitely think so. You don't have to monitor water at all untik the last 3 days. During lockdown is when you add water, and with my Nurture Right 360 I only had to add water to it on day 18 and didn't have to add water since.
It also seemed that the chicks developed faster and hatched...
I use a Nurture Right 360 Incubator. I tried a normal hatch and got 14/21 alive. I tried the dry hatch and got 18/22 alive so I would personally recommend dry hatching.