Reptocal reptile calcium supplement with vitamin D3.  Essential to life,  dust lightly on insects 1-2 times per week. Reptocal Calcium is a must for all, gecko, chameleon, tortoise and turtle owners alike.  Whether you are buying a baby gecko for sale, reptile for sale, tortoise for sale, or a turtle for sale, you will need to make sure you are dusting the food with calcium by just sprinkling lightly over the reptiles food or insects twice weekly.