Interesting Benefits of Aeration

Many people appreciate the look or aesthetics of a fountain or aerator in a small lake or pond, but they may not know all the benefits of lake aeration. If you have a lake or pond and you are noticing odd odors, murky water or fish death, your water feature may require aeration.  


Mosquitoes proliferate in stagnant water. Aerating a lake or pond prevents this proliferation because they require calm water surfaces to lay their eggs. When a fountain or pump agitates the surface of the water, these insects cannot breed and lay their eggs. In addition, aeration adds oxygen to the water, encouraging the growth and health of fish who eat the mosquito larvae.  

Temperature Regulation

Ponds and lakes have varying temperatures. For example, shaded areas are often colder than those that receive full sun. Aeration pulls and redistributes water throughout a lake or pond, so the temperature is consistent throughout. This process promotes healthy water temperatures for fish, which flourish in warm water.

Organic Matter Accumulation

Because aeration infuses bodies of water with oxygen, the organic matter within the water is naturally decomposed, preventing debris and sediment from accumulating on the bottom of the pond. Pond algae is also reduced because the spores are pushed to the bottom of the lake where phosphorus levels eliminate its growth.

However, if your pond is not deep, you may still have weed problems because they feed from the soil in the bottom of the pond.

Odor Control

Ponds and lakes without aeration accumulate carbon dioxide and hydrogen sulfide gas. The bottom of the pond is filled with enzymes that decompose and ferment plant life. These gasses cause unpleasant odors in and around these water features because increased oxygen levels promote aerobic bacteria, which then break down the plant life more efficiently. Therefore, you will get greater enjoyment out of your water feature due to aeration.

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Aeration systems infuse the water with oxygen, which fish require to live. This oxygen also prevents toxic gas buildup, which may harm fish. In the winter, aeration prevents ice formation, which may result in reduced oxygen and fish death. Finally, pH is balanced when carbon dioxide is removed and the water’s alkalinity is reduced.

When you are building a pond or small lake, consider including aeration to improve the look, smell and health of your water feature, especially if you are going to have fish. Not only will the water quality improve, but you will prevent mosquitoes from making your pond their breeding grounds.

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