While the levels of what type of nutrients you should give your pet vary greatly between turtles, all turtles and tortoises need calcium. Wild aquatic turtles get calcium naturally, but if you have this animal as a pet, you need to give it its proper dosage of calcium. There are many calcium supplements that these pets love.
If you do not give your pet calcium, this can lead to deformation of the skeleton, weakness of the shell, and, in some cases, rickets. However, do not worry. This problem is easy to prevent by giving your tortoise or turtle the necessary amount of calcium. The best type of calcium supplement also includes vitamin D3. Vitamin D3 or sunlight will help your pet absorb the calcium.