Before you get all the info and numbers about the setup, which is very important, this is typical hatchling behavior. Don't be too worried about it. Give him a little time to settle in and destress from the shipping, new environment, and the overall changes in his life. I purchased two pieds from the same place about 2 years ago and went through similar hatchling behavior with those two also. Hissing and hissing for awhile. They finally calmed down. Garrick is a good person to deal with and can help you along with them also. Call him and explain to him what you are going through. He is a great resource. Good luck .![]()