You need to seed the vivarium with isopods, springtails, bacteria and fungi. So is it ok to ask a friend a bit of old substrate in their vivarium to seed yours ?

Hey, i'm about ready to be starting a bunch of new builds (no questions, ill the zoo construction later) and was ready to get all the stuff for bulk ABG mixes. I already got all the info on that but what isos should i add to the ABG? Also, im going to need huge amounts for ABG for the over...