Indian Almond Leaves or Catappa are a rich natural source of tannins for your betta and shrimp. They are a sustainable and ecologically harvested natural resource that helps promote color, vitality and breeding in bettas and shrimp and all soft water loving animals. They also increase the health of your animals. Each leaf is natural and unique and may vary from the pictured samples. They are carefully sterilized packaged to be free of contaminants and safe for pets. Keep Your Leaves in a clean dry place. Use approximately 2 leaves per 10-15 gallons or 1 leaf per 5 gallons, you can cut leaves for faster activation into the water or for smaller volume tanks. Betta Breeders use up to 2 leaves per 5 gallons