A healthy pond starts with quality nutrition. As the makers of the world's most popular Fish food, TetraPond offers a variety of pond nutrition to meet any need. You can feel good knowing your Koi, Goldfish, and other pond fish are receiving a diet full of beneficial protein, vitamins, and fiber. Using quality fish food helps keep your pond clearer and cleaner. Foods like TetraPond Pond Sticks and Flakes are highly digestible--meaning nutrients are fully digested and not passed out into the pond to pollute and promote algae growth. It is important to only feed your fish enough food that they will consume within five minutes to avoid clouding water.