Hikari Turtle Sticks is a mix of three colored sticks, each with a specific purpose. The yellow sticks promote healthy growth. Proteins, minerals, and multivitamins help maintain the turtles' good physical condition. The green stick contains a high amount of calcium and lactic acid to strengthen the exoskeleton. The red stick contains chitosan extracted from crustaceans to activate metabolism and promote supple skin. Aquatic turtles need water to swallow their food, and the sticks absorb the water and soften without decomposing. – Balanced daily food for aquatic turtles. – Improves skin, shell, and growth. – Quickly softens, retains its shape, and does not cloud the water.