@Algae In Space
Although now I don't know where those females disappeared to. I don't see more than 10-15 of them at any given time. That is 1/3 to 1/2 the population. No known deaths.
How to deal with all the poop under the rock?
I wish I did a course lava rock bottom instead of seeing all this poop on the sand. I may just use the mini siphon I made using airline tube and syringe on Sunday (my tank maintenance and parameter testing day). The poop looks so dirty. And my pig of a snail is eating up all the greens. I think he will have to be moved later when I have a larger tank set up.