Hi Kaorte,
I have 1 UTH for each tank, and only one lamp is on at all times, they are just for day/night. I appreciate you and others explaining this stuff to me in terms that my little brain can understand. I have used ReptileBasics before and got great service, so I am going to call them tomorrow and find out what I need to get all of these gauges under control. Oh, and to answer your first question, each tank has 1digital thermometer/Humidity gauge, and a second digital temp probe for the ambient temp.
Make sense?
I'm going to keep at this until I get all of this stuff right, I love my little slithering bundles, and I want things to be just right!