Description Just like vitamins, minerals and PH balanced water for humans, your tortoises and turtle also need those things for bright colors, healthy breeding, molting and play! So, when you add our mineral stone to your tank, you’re giving your turtle friends, the best of health! Features - Color:White. - Material: Calcium. - Size: About1.20X1.20X1.20cm/0.47X0.47X0.47in. - Safe for all turtles, reptiles, terrestrial animals and others. -With rich trace elements, this calcium stone has a longer life, and it is really economic. - You do not need to wash it, and it can be put in the fish tank directly to be used. -Economic Friendly, the nutrient composition is in the calcium stone and can dissolve which will not pollute the water. -The calcium stone is decomposed easily, but it will not pollute.Package list: 24 x turtle tank calcium cubes