The amount of water in a turtle tank should be about two-thirds of the turtle's shell length. This allows the turtle to swim comfortably and still be able to reach the surface to breathe. If the water is too deep, the turtle may not be able to get to the surface quickly enough and may drown.
In addition to drowning, too much water in a turtle tank can also cause other health problems, such as:
* Respiratory infections: Turtles need to be able to breathe fresh air, and if the water in their tank is too deep, they may not be able to get enough oxygen. This can lead to respiratory infections, such as pneumonia.
* Shell rot: Shell rot is a bacterial infection of the turtle's shell. It is caused by exposure to wet or damp conditions, and it can be very painful for the turtle.
* Skin infections: Skin infections are also caused by exposure to wet or damp conditions. They can be very itchy and uncomfortable for the turtle.
If you are keeping a turtle in captivity, it is important to make sure that the water in its tank is at a safe level. This will help to prevent drowning and other health problems.