A horse in general takes about 10 to 12 months to grow a new hoof wall. During this time the horses hoof wall may look different, that is have different hoof rings depending on the nutrition level. Different nutrition levels may be a change in hay, alfalfa to grass, pasture or no pasture, time of year or supplements. The hoof wall needs specific levels of vitamins, and trace minerals, just like hair and skin, for healthy growth. Even with the correct nutrition the best we can hope for is an 20% increase in foot growth. What we can expect is a thicker and healthier hoof wall and a thicker and healthier sole. Stamina Plus has researched these specific levels and included them in the Complete Supplement and their Hoof Plus.