While kingianum can require cool temps to bloom (and it seems like some members are blooming it with "room temps"), that doesn't necessarily mean it won't work for a terrarium--mantella frogs, many newts, and other herps can require a cooler period as well (not a true hibernation, but brumation)--and axolotls can become quite sick if temps get above about 70F if I remember correctly.
So, as with many other things, the best plant is the one which matches your conditions. That said, I have found kingianum to be hardy and adaptable, both requirements, IMO, for a good beginner orchid.
Catherine
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