Adding oxygen to a pond with an efficient pond aerator is one of the best methods to improve pond health. The most effective pond aerators move large volumes of water preventing stagnant ponds and oxygenating the water. Surface fountains and bottom aerators are the most common types of large pond and lake aeration. They are sometimes used together since the floating fountains add beauty and the sound of falling water while bottom aerators that use air pumps have low operating costs. Learn more about pond aeration from the articles below.