I was given a 20gal front opening tank/terrarium from a friend. I'm really into houseplants and I have quite the collection that I really enjoy caring for. Since the tank was free and bioactive setups have always seemed very interesting to me, ive decided to take on this project. I would prefer a tropical setup because I can souce the plants for that from cuttings of things I already have. The tank is horizontal and the doors are about 4in up on the tank, it has a mesh top. I know that I will need some specific soil and a drainage layer setup, as well as springtails and isopods. I know that I won't be able to put any animal in it for a month or more. I have a few questions: should the tank be off the ground, or is it fine at floor level? what animals would be ethical to keep in a tank this size? what common issues will I probably run into? if I got an animal that had burrowing behavior, would it destroy the plants I put in there? what's the best way to get the fogginess off of the tanks glass(its secondhand)? it is absolutely necessary to decide what I want to put in there before I start making the setup? thats about all I can think of right now. thanks :)