Update: 10/30/14
Noticing more deaths by the hour, I forcefully dumped the colony out into an outworld with a brand new test tube, which was covered by one of my test tube jackets. Thanks to an addition of light, they quickly found the nice, dark test tube and moved in. It seems these guys will do just fine.
Edited by Gregory2455, October 30 2014 - 7:22 PM.