Turtle Health Block is scientifically formulated to condition the water that your pet lives in, whilst releasing beneficial minerals to maintain health. Calcium with vitamin D3 and other minerals are released into the water, to help prevent shell softening, which is caused by the water becoming acidic, which in turn burns the reptile shell and skin. It is also very important to create an environment where your pet can both enter and leave the water, which enables time for its shell to dry out. Natural sunlight or artificial lighting are also essential to keep your pet healthy. This block acts as a pH buffer, reducing acid while also neutralizing ammonia, which is produced by the animals body waste.