I have four CT test tube set-ups, And I have atleast one pair of termites in each, the others haven't seem to found there match yet. It consists of a small proportion of dirt at the bottom, and cardboard that has been hole punched, and bended to fit perfectly into the tube. Note for people using the CT setup, Water before applying the termites.
Colony one - Ruby
Colony two - Teal
Colony three - (you guys name it)
Colony four - (you guys name it)
Picture updates coming soon