One thing to add about humidity: its different at differt parts of the year. Im in a high humidity climate too. February is the easiest time of year to set eggs for me. I usually run at 15% for the first 18 days the only time i add water is if it drops down to 12% but usually just lifting the lid a little bit (or if youre turning by hand) will be enough to bring it back up. I dont have the aircell growth i want to see unless i do that. With the hovabator i needed the smallest and largest well to get my humidity to 65% during a really dry spell this summer. Local humidity was at about 50% . when the chicks started hatching the humidity in the incubator was going up to 82% and i was lifting the lid to try to bring it down. I ended up taking the not fully dry chicks out and putting them under my MHP(heating pad) setup to dry.
If the local humidity was at normal 80% - 90% i would probably only have to put water in the smallest well. But that's why i test just before setting eggs its so that i know how it will act with the current weather.
If the local humidity was at normal 80% - 90% i would probably only have to put water in the smallest well. But that's why i test just before setting eggs its so that i know how it will act with the current weather.