I found this stuff at the pet store- it's a calcium carbonate substrate for lizards that's fortified with vitamins and minerals.. i was curious if anyone has used it or knew if it would work as a substitute for CaCO3 in a casing mix? The ingredients are listed below and here's a link for more info: http://www.reptilesupply.com/product.php?products_id=643
Ingredients: Calcium Carbonate, Magnesium Carbonate, Iron Oxide, Beta Carotene, Ascorbic Acid (Vitamin C), Calcium Pantothenate, Vitamin B12, Biotin, Vitamin B6 (Pyridoxine HCL), Niacin, Riboflavin, Vitamin B1 (Thiamine HCL), Folic Acid, Dicalcium Phosphate.
Ingredients: Calcium Carbonate, Magnesium Carbonate, Iron Oxide, Beta Carotene, Ascorbic Acid (Vitamin C), Calcium Pantothenate, Vitamin B12, Biotin, Vitamin B6 (Pyridoxine HCL), Niacin, Riboflavin, Vitamin B1 (Thiamine HCL), Folic Acid, Dicalcium Phosphate.