Do you have issues with leaves getting into your koi pond? Nets can be a quick and inexpensive solution and may reduce maintenance on your koi pond or water garden over time. Nets can be stored and only used in the fall when the leaves are turning color and falling. Or they can be used year-round to reduce the amount of debris that falls into your pond. An added benefit is that a properly installed net can deter predators such as herons and other birds from getting to your fish.