grass turtles can't be kept indoors without sun, because they are amphibians. When they are in the wild, they like to climb to the water to bask in the sun. Many grass turtles bask in the sun in groups on Stone or driftwood when they are in the wild. When they are raised artificially, not basking in the sun may lead to loss of appetite and poor physique. Moreover, if you don't receive sunlight for a long time, bacteria on your carapace will gradually increase, which may make them suffer from soft shell disease or skin rot disease. Not basking in the sun will also affect their absorption of calcium, and the gloss of carapace will become lower.
2. What's the use of basking in the sun?Basking in the sun can promote their metabolism and enhance their appetite and activity. Ultraviolet rays in the sun can also kill most bacteria on their carapace, reducing them from diseases such as rotten armor and rotten skin.
Sunbathing can also promote the absorption of trace elements such as calcium and phosphorus, which can not only improve immunity and resistance, but also make their carapace harder and brighter.
It is essential for grass turtles to bask in the sun, because sunlight can not only strengthen their physique, but also make their appearance more beautiful, so it is best for artificially bred grass turtles to bask in the sun regularly. If you can't receive natural light, you can install a back light.