I have a circulated air Hovabator. We set it up Wednesday, got the temp stable averaging 99.3, and added 12 duck eggs early Saturday morning. I didn't mess with it for 24 hours, but turned it up a couple bits today, it just seems to be having a hard time getting back to temperature. Should I be afraid to turn it up, or is this normal? Thanks!
Once you adjust it, give it 2-3 hours before adjusting it again. It's normal. Just make sure you make small adjustments and can be there to monitor it after adjusting it to catch it if it rises to high.