Mould on viv wood

[Gradderz]

BTW the water is pretty darn clear despite not having changed it yet... Could this be because I rinsed the leca, wood, gravel and slate so thoroughly before putting them in the tank?
OH and as another note, what do you guys think will make best use of a viv like this? (even if it's not an amphibian!) I know it isn't planted but I built it with Dart Frogs in mind yet am open to any suggestions, I love darts and red eyes, but the nocturnal part isn't too fun when it comes to tree frogs. I've only kept Reed frogs before this and while I loved them, barely seeing them out and about unless I had a late night was a real downer.

[DigitalPunk]

Looks good! Can you post a shot of the whole tank in one picture and what are the dimensions of the tank?