I'm not going to add to the sand/no-sand debate, but rather, address the issue of using the calcium sand substrate. First of all, have you ever done any background research into these kind of products? Vita-Sand is just another calcium sand, not really any different than the other ones out there, if you do some research, you'll figure that out. Now, do you know what happens to calcium carbonate if it gets wet? It clumps into very solid masses, and when futher combined with other mineral and vitamins, it can cause some serious issues. Given proper husbandry, regular sand can pass through the system with little to no problems, calcium carbonate based sands aren't that easy because of the clumping tendency, thus significantly increasing your chances of impactions, as proper hydration to the gecko will only further solidify the clump. In addition, some of these sands have even been discovered not to dissolve in hydrochloric acid, the compound that breaks down food in the digestive system. Just about every year, some company tries coming out with a different version of the calcium sands; I am still hoping to find one that actually does what it says it does. But, until then, in my opinion, if you like the look of sand, I would go with regular playsand, and make sure you dust your feeders. Good Luck!