Need help with Paludarium.

[tecknos11]

I am planing on setting up a large paludarium mimicking a desert canyon landscape with some frogs, lizards, and fish in it. I have very little experience keeping frogs but plenty experience of raising tadpoles :-)

My plans are to extend a 125g aquarium upward, create a concrete/foam backdrop from top to bottom, and a shelf between the terrestial/aquatic zone that covers half the length of the enclosure for land. Hopefully this will create the perfect balance of arid desert and humidity.

I was thinking of mixing geckos and canyon tree frogs whose habitat I am mimicking.
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What do you think the best type of enclosure for the extension? I was thinking doing some like those vivariums where they use a black mesh instead of glass.

Can I mix canyon tree frogs, geckos, and fish in the same set up or will it not work out?

Here is the landscape I am mimicking where the canyon tree frogs live.

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