forced air = 99.5F - be sure to measure temperature at the top of egg level, not above or below. do not use the built-in thermometer on a styrofoam incubator as they are notoriously inaccurate
I use a method of incubation called the Dry method when using a styrofoam incubator. I do not add water until lockdown, I aim for about 35% humidity throughout the hatch. I open all the vent plugs to allow the ambient room humidity to affect the incubator because where I live in Oregon my house is 50% humidity. depending if your area is humid or dry this may or may not work for you. I live in a humid climate.
For lockdown on day 19 I increase the humidity to 60% (temp stays 99.5) by adding water to the water dish in the bottom. you can also use a sponge. humidity increases with surface area of the water/sponge.
once an egg pips you do not want to open the incubator! very important.
if you set this last Sunday 3/20, then:
day 1 = 3/21
day 7 = 3/27
day 14 = 4/3
day 19 = 4/8 (increase humidity)
day 21 = 4/10 (hatch day)
I meant Sunday 3/6 is when I set them so they will hatch this weekend. Thanks!