Hi Kimberly! You can use distilled water for misting but not on frog water dish or enclosure features. For that need either dechlorinated tap or bottled spring water. Dish water should be changed daily, even if it looks clean.

Food should be dusted with CA/D3 2X and vitamins 1X weekly on different days with skip day in between.

For a tree frog most aquariums work better on their end, this article will help you with ideas on how to do that: Frog Forum - Building Dart Frog Terrariums / Tropical Terrarium Construction .