WTF's set up, show me yours.

[kueluck]

They will all be in the hospital tank until I get a clean fecal exam, about 3 more weeks. I just like to get started on the re-do because I have a tendancy to change this up a few times before I find something that will work for both frogs and me. Placing emphasis on the frogs.

In the 18x18x24 inch enclosure, I would recommend using something for the substrate that can retain moisture. So maybe a combination of the sphagnum moss (for humidity) and the paper towel? Until things get better. As long as you're bowl feeding and/or tong feeding, the the moss is a great way to maintain humidity...
I use leca on the bottom layer, then the coco fiber... a screen in between the two. This seems to be adequate to keep up the humidity.
In your situation, with the sick babies, I would stick with the paper towel until they're better, but in my experience, the paper towel alone was difficult to maintain humidity (but I also live in the desert).