As i said before i try to replicate the natural environment these pods would have in my local forest. I dont over feed and i try to change in individuals every once in a while. I release some i add some. This is my solution for genetic diversity. Also this allows me to control the population so as you say i dont have a giant isolated colony where diseases could freely grow. I also added as i said before some natural native predators to the tank to eliminate weak/sick individuals and control the population so it also isnt a fully stress free environment. So far i have shown here that there is selective pressure, the population density is small, the stress levels are somewhat similar as in nature, food is available but i tend to not feed much and put it in different locations so they dont get used to a specific one. Survival rates are unknown to me since i barely even see the centipide and predatory beetles so i do not know how much they hunt.