Ever since I picked up my first leopard gecko, Kirby, his cage to me has been...mediocre. Overall it functions very well and gives him everything he needs, but for an open display, it has been quite boring. Recently, I have been making a lot of bioactive terrariums for some of my friends animals, and would really like to upgrade Kirbys cage to a nice bioactive enclosure, but have a few questions.

1) What substrate would be best for this arid environment? Or would it be as simple as using items such as repti-soil and keeping them more dry than usual?

2) What plants/cleanup crews would be suitible for this environment? Are there springtails that can live in a more arid environment, or are they all need higher moisture? Im currently also breeding out a colony of chocolate zebra isopods, would a colony of those survive well, or would they all be gobbled up by the leo faster than they can reproduce?

3) Im aware that this shouldnt be 100% humid, what would be a good humidity range to aim for in a bioactive setup such as this one?

If anyone has any other advice or experience on this topic, I would love to hear it!

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