Dumbork should receive at least 30 minutes of pure unfiltered morning sunlight every day. Problem is, I have work and I cannot assign others to do this task. I’m still monitoring the temperature around the tank. Before, Dumbork’s tank sits on the table with a fiberglass roof directly on top. Now, we moved Dumbork to a table near the wall because of the tank upgrade. He only gets unfiltered sunlight every weekend. His shell now has dark brown splotches, but we’re thinking that it could be shedding.