Springtails are extremely prolific and useful little organisms that I recommend most people to keep. Lots of the ants I keep frequently or exclusively prey on springtails. They also act as a cleaner crew for your setups if that interests you. I keep mine in mostly any sort of substrate that is moistened and I add small piles of rice every time they get done with their previous pile of rice. Keep in mind different kinds of springtails with have different preferences and diets although most aren't too picky.
These here are Folsomia sp. that I caught from a nearby forest. I originally started with about 20 springtails.
Edited by AntsAreUs, August 14 2018 - 3:29 PM.