I'm not even familiar with reptile carpet, but from what I've seen in the pet stores, it looks sort of like Astroturf. I don't know whether it would work or not, but I wouldn't buy it just for a trial. Like Josh, I use paper towels in my "nursery tanks," or sometimes even and inch or milled cococanut fiber and maybe some sphagnum, which doesn't need changing like paper towels do. Either way, I put in some live plant cuttings such as a piece of pothos, ivy, or one of the vining plants. Paper towels are good when you might be concerned with parasites and want to look at the frog poop and perhaps collect it for fecal exams.
I'm just guessing, but reptile carpet is designed for scaly reptiles and not amphibians whose skins are delicate, more like the mucous membranes in our own mouths, and it is probably some kind of plastic material, not designed for biological balance, but for easy removal and sanitizing. With dart frogs, most of us try to use organic material that tend to harbor micro-organisms that help set up a biological balance that we don't have to continually interfere with. Even paper towels that we do replace occasionally in nursery tanks are not "plastics."
While reptile carpet may work just fine on a short term basis in a nursery tank, I can't think of any advantage to doing this as opposed to the towels or cocoanut/sphagnum stuff. You'd have to remove it regularly to re-sanitize it, rather than just replacing a wet paper towel, or just leaving the nursery tank substrate alone, with the cocoanut fiber or sphagnum combinations we use.
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Patty
Pahsimeroi, Idaho
4 D. auratus blue
5 D. galactonotus pumpkin orange splash back
5 D. imitator
6 D. leucomelas
4 D. pumilio Bastimentos
4 D. fantasticus
4 P. terribilis
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus
