Yup, that's exactly what I was going to say. In my incubator/region, 48% would be too high. You're going to bump the humidity up after day 18 for the hatch, so this is your best window to correct and make sure the air cells are big enough. As I've said upstream, my personal preference is to err on the side of a bit too dry, because sticky chicks and drownings are no fun.
I use something similar, a large dispensing syringe with a very long needle that can fit through the mesh at the bottom of my incubator. I also like using cut up sponges, because I feel like they keep the humidity stable level without having to fill a trough with water frequently. Allows me to keep it in the 30-40 range pretty consistently.
Hey sorry I just seen this. This is my first time hatching ducks. I asked for info from the duck board. I candled this morning and all 4 are still alive. I cool them and spray them once a day. Other then that I haven't done anything different then I do with chicken eggs. I have chicken eggs in the same incubator with the duck eggs that are due to hatch at the same time. Good luck
I'm not cooling or spraying mine. I'm on day 10 and they seem to be fine.
I have never heard of this breed, so I had to look them up. They look so cool! Like a cross between a salmon faverolle and a CCL.
I've done duck eggs twice. First time I did it just like chickens. Only one hatched and it was with assistance. The rest died in the shell at hatch. Last time I followed a guide, cooled and misted starting on day 10. All 6 that made it to lockdown hatched without assistance. That's my tiny bit of experience.
So I can do it like now? It's day 10 for me. What kind of water do I spray with? Distilled or my filtered well water? Should it be warm or cool water?
