So the typical consensus about the calcium to phosphorus ratio is 2:1. Many if not all tortoise keepers (including myself) supplement their tort's meal with calcium supplements and multivitamins. Something that has been making me wonder lately, is how much added calcium is really necessary for the health of our beloved tortoises? I feed my Leopard a mix of Mustard Greens, Turnip Greens, Collard Greens, and ZooMed Grassland Tortoise Food. All of these items are above the standard 2:1 ratio (Collards can be as high as 15:1). So when we have this extreme amount of natural calcium in their diet, is it really the best idea to continue supplementing?