I know a guy in germany whom has a bio-active viv with royals in it. I think he cleans the whole thing out once a year and starts new cultures. I believe is is not using springtails as he removes heavy waste as with royals it is too large to be broken down but the rest is stirred in. I know it smells wonderful all clean and earthy like fresh fields. It is growing with grasses (carrex I think) and a handful of ground cover with larger plants in the back.

It is an exceptional project I have a candidate viv and occupants I just don't have the time to put it all together and no green thumb. It is the ultimate low maintenance enclosure, my friend says the time is in the set up it maintains itself. I so want to try it.