The Aqua Garden is an innovation in cat grass! This hydroponic cat grass garden is a natural treat of 100% organic wheat grass that your cat loves. The Aqua Garden uses no soil or additives, just the continuously circulating water of the Drinkwell Pet Fountain to grow cat grass in a matter of days. Wheat grass is used to help manage hairballs, aid in digestion and can even save houseplants! The Aqua Garden only attaches to your Original Drinkwell Pet Fountain