Simply put, adding aeration to a pond, water-garden or even a natural lake is one of the best methods to control algae and maintain clear waters and discourage the build-up of bottom sediments.. It is extremely important never to overlook aeration when building a new pond or when trying to restore one that is undergoing eutrophication especially in small basins athat have a large organic load and that are typically mucky at the bottom. The organic material can be grass clippings, so it is best to leave a perimiter of natural thick vegetation and even aquatic plants to help reduce erosion and prevent runoff laced with fertilizers from getting into the water.
Our experience has shown that in most cases that adding air diffusion into the bottom levels of the pond is often the the best form of aeration. This manner of aerating is basically the injection of air bubbles into the water to supply oxygen as well to create water movement because as the small air bubbles rise to the surface they create a movement that pulls oxygen deprived waters from the depths up towards the surface where they can interact with the atmosphere and achieve a high level of efficient oxygen transfer. Read more about Aeration