@ Orin: Thanks! 20-30 is pretty good size for ootheca of only 1/4 in!!
@Effeci: Thank you! i am keeping the room around 85F/day and 75F/night, 30-45 days is about the same duration for praying mantis ootheca to hatch too, cool! The roach ootheca appear to be very large in comparison to the size of that adult female roach
@Matt: i don't want to mist the roach culture, will add more vegi and fruits, also water jelly to help increase the humidity. Thanks for the humidity tips!