Oh that care sheet is coming up really funky on my computer. To answer the ops question though...
A 18 cubed is not going to cut it. They are arboreal and need height. That may work for babies and I keep small groups of my toklings in one of those but a minimum for any adult is 18 x 18 x 36.
That would work for up to a pair for their entire life spans. The tank should be set up thermal regulation zones top to bottom. Highest temp area should be 95.f
Humidity at least 70%. By far though the more hot and humid the better. What I do is I spray heavy in the am. Let it dry out all day and then do a light mist in late afternoon.
They are nocturnal so they don't need UVB lights but they do well having a day/night cycle. Ceramic heat emitters and sun bulbs work really well to achieve desired temps. The walls need to be covered with fake foliage for them to hide behind. PVC piping also works great for arboreal hides. The more clutter in the cage the better. They'll barely come to the ground if they are happy. So no hides are needed on the ground. I'll try and find a picture of one of my cages.
Anyways this should get you started.