18 Pcs Calcium Blocks Mineral Supplement For Lizard Gecko Reptile Fish Tank Water Quality Wear Resistant Cube Pet Products Description _x000D_ _x000D_ Just like vitamins, minerals and PH balanced water for humans, your tortoises and turtle also need for bright colors, healthy breeding, molting and play! So, when you add our mineral block to your tank, youre giving your turtle friends, the ! _x000D_ _x000D_ Features _x000D_ _x000D_ -Color: White _x000D_ -Material: Calcium _x000D_ -Size: 1.20X1.20X1.20cm/ 0.47X0.47X0.47inch _x000D_ -With rich trace elements, this calcium block has a longer life, and it is really economic. _x000D_ -You do not need to wash it, and it can be put in the fish tank directly to be used. _x000D_ -The nutrient composition is in the calcium block and can dissolve which will not pollute the water. _x000D_ -To supplement the deficiency of mineral elements and trace elements in tortoises reared in captivity. _x000D_ -Dissolve in water for drinking, bath water and feeding water can also be dissolved in water for using turtle food. 18 x Calcium Blocks _x000D_