Humidity- I remember hearing that whites tree frogs are able to get teapot pry and fungal problems in 40-50% constant humidities. You are the expert though so please tell me what the right humidity range should be.
Supplements- I have a powder called ReptoLife plus.which is multivitamins and I have a powder called ReptoCal which is calcium and D3. Should I use those every feeding time?
Water- how much water conditioner do I have to use each time and what brand do I get?

What is repti boost? Where can I get it? For a fecal test do you mean bring it to a doctor?