"Repti bark" tends to rank lower on the scale of general-use substrates, due to the size of the chunks & the potential for ingestion & subsequent impaction/blockage. Research a mix of coco husk (i.e. Eco Earth by Zoo Med or T-Rex Forest Bed), sphagnum moss & play sand as a substrate for this species. That's a good general-purpose mix that works well for many different species of both reptiles & amphibians.