The back wall is covered by a coconut husk mat that is also used for hermit crab cages. it holds humidity very well. I will get some more to cover the other 2 sides. Another UTH is will be added to the back of the cage. Any ideas on feeding? I have read it is common for them to go 1-2 weeks without eating when introduced to a new home. The temp is now up to 70 and slowly climbing since this morning. thanks for your reply and help. Look forward to hearing any more advice on feeding and any other tips on pacman frogs.