I am incubating my first batch of eggs from my personal chicks in my new brinsea 20 Eco incubator. I started with 25 EE eggs. I had 1 clear and 1 quiter around day 7-9? I'm pretty nervous and excited about the upcoming lockdown. Temp has been steady at 99.5. Humidity between 35-40%. I know I need to get my humidity up to 65-70% at lockdown. Does that take 1 sponge in on water well. Or two? One in each water well?