How much water should you provide your tree frog?

You tree frog only needs a shallow dish that is no deeper than its ears when it sits normally, at most. A deeper dish may Tree frogs will come down at night to sit in the dish and absorb water, and clean themselves. Since they use the water for a bath and toilet, it should be changed every day. Replace it with filtered water (not RO or distilled water). Tap water contains dangerous chloramines.