For the tested releases, I’ll throw down a few packs worth. Beat them up heavily, root bound, neglected, under watered, overwatered, no ph, heavy feeding, straight un-ph’d water, etc.
I Heavily test the parents as well. (Both swack and Eutierria mothers I had held for 6 years before using them.) I don’t always hold them that long (they were definitely special), but I do put them through the ringer so to speak.