What day are you on? In my home made incubator (the box is about 15" x 15" and about 10" high) I keep it at 20 - 30% with a piece of sponge (about 1" x 3") in a little cup, add about 1.5 oz water every couple of days. Did you put the water in a channel in the bottom? is there any way you could wick the water out, or could you take the eggs out for a few minutes, dump the water out and start over? It won't hurt the eggs to be out for 10 minutes or so. Mama broody leaves the nest every day to tend to business.