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  • Bill Kelley

Fountains, Aeration & Thermocline

A fountain is a water feature, typically large and ornamental, used to display water or other substances, to generate a graceful arc or to provide a feature for a garden or public square.




Happy summer everyone! Today I want to talk about one of my favorite topics - pond and lake aeration. As you all know, aeration is essential for maintaining a healthy pond or lake. It helps to keep the water well-oxygenated and can also help to circulate nutrients and remove pollutants.


There are two main types of aeration - surface aeration and subsurface aeration. Surface aeration is the most common and is typically used in smaller ponds or lakes. It involves using a pump to create a stream of air bubbles that rise to the surface. This process not only oxygenates the water, but also helps to circulate nutrients and remove pollutants.


Subsurface aeration is typically used in larger ponds or lakes. It involves using a diffuser to create a stream of air bubbles that rise to the surface. This process not only oxygenates the water, but also helps to circulate nutrients and remove pollutants.


Both surface and subsurface aeration are effective at oxygenating the water and circulating nutrients. However, subsurface aeration is generally more effective at removing pollutants. This is because the air bubbles rising to the surface help to create a thermocline.



The thermocline is a layer in a body of water where the temperature decreases rapidly with depth. In a lake, the thermocline begins at the point where the water temperature slows from its surface temperature to its maximum depth temperature. The thermocline may be only a few feet thick or it may be very deep. In a pond, the thermocline may be near the bottom or may not form at all. A thermocline can form in any body of water that has a temperature gradient with depth, including oceans, lakes, reservoirs, and ponds.


The thermocline is important because it controls the mixing of warm and cold water. Warm water is less dense than cold water and tends to float on top of cold water. However, the thermocline acts as a barrier that prevents the mixing of these two layers of water. This segregation of warm and cold water creates different habitats in the upper and lower layers of water. The thermocline also affects the movement of dissolved oxygen and nutrients in the water.


The thermocline can vary in depth and thickness depending on the time of year and the weather. In the summer, the thermocline is usually shallower and thinner than in the winter.


Aeration is the process of adding oxygen to the water in a pond or lake. The most common type of aeration is mechanical, which uses an air pump to circulate air through a diffuser. This process not only introduces oxygen to the water, but also helps to circulate nutrients and remove waste products.


Oxygen is essential for the health of aquatic life, and the amount of dissolved oxygen in a body of water can have a big impact on water quality. Dissolved oxygen levels can be affected by a number of factors, including temperature, pH, and the presence of pollutants.


When water temperatures rise, the amount of dissolved oxygen in the water decreases. This is due to the fact that warm water can hold less dissolved oxygen than cold water. As water temperature increases, the amount of oxygen that can be dissolved in the water decreases, and this can create problems for aquatic life.


One way to compensate for this decrease in dissolved oxygen is to add oxygen to the water through aeration. Aeration can help to raise the dissolved oxygen levels in a body of water, and this can improve the quality of the water for aquatic life.


Aeration can also help to circulate nutrients and remove waste products from a body of water

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