I find this kind of amazing really, just how alike this terrarium setup is like my own! Left I have a Ficus, in the middle my umbrella and on the right my pothos

The only difference is that I also have a bromelia in the front
My terrarium that looks so houses a mini-Eliotti (He's mini because he's about half the size he should be. Either his parents were brother and sister, hence why ever other young chameleon died, leaving him an only child, or he didn't get enough nutrition when he was very young).
Against what people here have been saying, I have substrate and a glass terrarium for humidity. The air here is really dry (my husband's hands are actually cracking and bleeding from the dryness) so I needed an optimal way of keeping things humid. The terrarium has side-bottom ventilation and a fully screened top for air circulation. Needless to say, Marimo is healthy, 1 year, 4 months old chameleon. I have also added some bugs for cleanup in his setup, which keeps the poop and dead leaves from piling up.
I suppose I could be considered lucky that things turned out as awesomely as they did. He hasn't ingested any substrate, but he hardly ever goes under halfway towards the bottom his terrarium and the substrate hasn't molded (Might be the type, I'm not sure what it is exactly, but it soaks in moisture like a sponge and it gets soft but stays clumped up in bigger pieces).
I just felt the need to testify that, if you are careful with your husbandry, and your location calls for a glass terrarium with substrate to keep humidity levels around/above 80%, it CAN work out
