Thanks so much for your help John, you and everyone else on this forum have been fantastic.

My bedroom rarely goes below 23 degrees if im there, and i've seen anything up to 31 degrees when i refused to open the window after using my computer for a long period, so a temporary container like the one you suggested would do fine for a short period, I wouldnt have to worry about temperatures.

I've been reading guides on how to build terrariums, and plan to use yours on this site (which is a fantastic guide by the way). I followed some people's diaries when they made their own terrarium backs, and the combination of your false bottom method with an expanding foam backdrop seems feasible, and at a reasonable cost.

I will definitely start hand misting, and if humidity becomes a problem I can always sort out an automatic system in the future.

I have no experience in cutting glass, nor aquarium or terrarium construction, which is why I am swaying towards modifying an exo-terra rather than trying to create my own. I guess it depends on the range available.

I have managed to find oak leaves which are apparently suitable for dart frogs and will decay slowly, and my local shop sells many different substrates for amphibian and reptile use, I dont think that will be a problem.

I know you say I can get the frogs in as soon as the plants are in, but I'm going to watch it for a bit, make sure I can keep the humidity and temperature at reasonable levels, as well as making sure I can get their fruit flies going.

One more question before I go to bed - I am edging towards leucomelas, do I need a light in the top or not? The tank will be away from the window, not in the dark but not in bright light by any means.