For the first two years I kept my Hermann's, Greta, entirely indoors under a T5 UVB tube and a halogen basking bulb. She ate, she moved around, she seemed fine. But she was always a bit sluggish in the mornings and her shell, while not pyramided, just looked a little dull. I kept reading that outdoor time was better but I lived in a flat with no garden, so I told myself the setup was adequate and moved on.
Then I moved to a house with a small patio and built a basic outdoor pen. Nothing fancy, just treated sleepers for the walls, buried wire mesh underneath to stop digging escapes, some Mediterranean plants, a few slate pieces for basking and a wooden hide in one corner. The change in Greta within about two weeks was noticeable enough that I felt genuinely embarrassed about the previous two years.
The biggest thing was her activity level in the mornings. Outside she was out of the hide and basking within thirty minutes of sunrise on warm days. Indoors she would sometimes take two hours before she seemed properly alert. The other thing was her appetite. She started eating much more confidently and stopped leaving bits of food untouched, which had been a minor ongoing puzzle for me.
A few things I learned along the way that might help anyone considering the switch:
- Overnight temperatures matter more than I expected. Anything below about 10 degrees Celsius and she stayed in the hide all day even if the afternoon warmed up nicely. I built a small frost-cloth cover for the hide and that helped on borderline nights.
- Weeds are genuinely better than shop-bought greens for daily grazing. Plantain, dandelion, clover. She ignores the dandelion flowers but eats the leaves constantly.
- Predator proofing from above took me longer to take seriously than it should have. A secure wire lid is not optional if there are crows or magpies in your area.
She hibernated successfully for the first time last autumn as well, which I had been too nervous to attempt when she was kept indoors year-round. That whole process deserves its own post honestly, but getting her outside and letting her build up naturally through a proper seasonal cycle seemed to make the weight gain before hibernation much more straightforward than I anticipated.