Really loving the idea of a biotope/biotype Vivarium. The dart frog hobby is so creative and people always seem to have an amazing imagination and capacity for research like this. Loving that street view - what a great tree to base your build off.
In terms of misting, perhaps look into the rain nozzles from Dendroshop in Germany - they can deliver to netherlands I'm sure. That might give a more natural feel which I think you're going for. If drilling in holes from the top, you have an advantage over other vivariums that might have their misting nozzles only at the front, ruling out vertical rainfall.
For sure the most contentious part of the build on this forum will be the beach and water area, as it doesn't benefit the Pumilio. With the size of the Vivarium, the usable space area would be larger than, say, an 18x18x36 vivarium, but I would consider whether it is worth sacrificing half(?) of the vivarium for visual aesthetics. A couple alternatives could be a sandy corner with a small amount of water, or even building an aquarium beside the vivarium. The design considerations of a water feature are often more hassle than they're worth, but if you're set on it and are prepared to take it out if things go wrong before adding frogs then that is probably the best way to learn!
With a 360 degree view of vivarium, consider a couple things:
1. A lot of keepers I've spoken to have experienced positive changes to the frogs' boldness when covering 2 or more sides of the glass - likely due to them being more secure. I am a big fan of backgrounds, as when done correctly they can add to the usable space of a vivarium (sleeping in cork bark etc.), but even covering with a black film outside will allow less external light into the viv and therefore give more of a sense of security for the inhabitants.
2. For access to frogs and plants, definitely try and gear the vivarium to face one way, even if it is viewable from other sides. This will make your life easier in the future, especially if trying to catch little froglets or trim plants. From the designs it looks as if you want the tank to open on to the back of the tree - I would rethink that, but I do not know where the viv will be sitting in your space.
Bastimentos seem like a perfect choice for this build, and from general consensus will be larger and bolder than Escudo.
iNaturalist and GBIF could give some inspiration on plant choice.
Good luck on this project
In terms of misting, perhaps look into the rain nozzles from Dendroshop in Germany - they can deliver to netherlands I'm sure. That might give a more natural feel which I think you're going for. If drilling in holes from the top, you have an advantage over other vivariums that might have their misting nozzles only at the front, ruling out vertical rainfall.
For sure the most contentious part of the build on this forum will be the beach and water area, as it doesn't benefit the Pumilio. With the size of the Vivarium, the usable space area would be larger than, say, an 18x18x36 vivarium, but I would consider whether it is worth sacrificing half(?) of the vivarium for visual aesthetics. A couple alternatives could be a sandy corner with a small amount of water, or even building an aquarium beside the vivarium. The design considerations of a water feature are often more hassle than they're worth, but if you're set on it and are prepared to take it out if things go wrong before adding frogs then that is probably the best way to learn!
With a 360 degree view of vivarium, consider a couple things:
1. A lot of keepers I've spoken to have experienced positive changes to the frogs' boldness when covering 2 or more sides of the glass - likely due to them being more secure. I am a big fan of backgrounds, as when done correctly they can add to the usable space of a vivarium (sleeping in cork bark etc.), but even covering with a black film outside will allow less external light into the viv and therefore give more of a sense of security for the inhabitants.
2. For access to frogs and plants, definitely try and gear the vivarium to face one way, even if it is viewable from other sides. This will make your life easier in the future, especially if trying to catch little froglets or trim plants. From the designs it looks as if you want the tank to open on to the back of the tree - I would rethink that, but I do not know where the viv will be sitting in your space.
Bastimentos seem like a perfect choice for this build, and from general consensus will be larger and bolder than Escudo.
iNaturalist and GBIF could give some inspiration on plant choice.
Good luck on this project