Sorry, I missed this when you wrote it the first time. Thanks for taking my request for information seriously. I am glad that you are doing some research.I'm basing my information off of a bunch of research as well as after talking to a handful of hobbyist breeders as well as personally seeing D. Auratus in the wild, specifically the Hawaiian variant. One of those key sources I've spoken to that made the information public would be Josh's Frogs. I've spoken to Zach and Thomas from JF's and they had mentioned that in their experience Auratus appreciate small water features. Personally, I've seen Auratus inhabit areas around small streams and a few feet away from a small waterfall. Seeing this in person leads me to believe that they have no issues with a water feature as long as there is drainage and other areas that allow them to dry out.
One thing that a lot of people seem to overlook is what the presence of water brings. It brings life. Based on that you're going to have larger animals providing waste, which in turn draws in some insects, insects are then food. Yes there are other species of prey that inhabit other places that are not as damp, but being around water also means the ambient humidity is higher. With a Viv, as long as there is venting (passive or active) I believe that some species are capable of living within the presence of a water feature without issues.
On top of all of this I've seen Froggers who keep darts within their green houses. Besides Epipedobates anythonyi I've stumbled upon handfuls of articles over the past 10 years showing free range darts within greenhouses that contain much larger water features. I wouldn't condone keeping darts in something too deep or being around a water feature with current, but as long as the scaling is right to the enclosure I'm confident it can be done without harm. The issues in regards to this are making sure we compensate for the loss of floor space with scaling up the enclosure to accommodate and again, keeping an eye on ventilation and working to make sure that it's managed.
Maybe I wasn't super clear with my descriptions (trying to describe viscosity is always, hm, interesting). I was able to use a craft brush to get into nooks, but it was definitely more like a goopy paste than a liquid paint. Maybe like a runny, gritty frosting?Interesting that your Drylock was so thick? You did stir the bucket before using/pouring it into your painting container right? The stuff I got after a thorough mixing was thin enough that I could use craft brushes to get into the small nooks with a couple dabs of the brush.