Even after moving them to the bigger box and putting in 2 peices of egg crates, the killing didn't stop.
I finanlly setup the new tank and they have now moved but it took me too long. What was over 90 peppermint shrimps are now more like around 20. These b@st@r!s would gang up on the sibling that has newly molted and eat them when they are soft. In the small confined space, they had no where to run or hide. Also, they seem to know when a shrimp is about to molt even before they do and would follow them around, waiting to attack when they molt. Quite interesting indeed.
I guess I let it happen becasue I was too lazy. Next time I'll breed hundreds of them and they'll all live to grow big.
Oh and some of the second gen peppermint shrimps have berried eggs.