Here’s a brand new supplement making its debut here! Cacti-Cal is a calcium made of pure cactus pad powder. You’ve always heard that feeding cactus is great for your tortoises. Now you can use it as a supplement. Cactus is high in calcium! Calcium is an essential nutrient for reptiles. Simply sprinkle this on your reptile’s food just as you would a normal calcium supplement. This is something I’ve been using with my tortoises for awhile and now you can too.