Posted on February 19 2019
Dissolved oxygen plays a critical role in the health of a water body. Usually, water bodies that have low dissolved oxygen levels show signs of fish kills, algae growth, and odour. By installing an aeration system into your water body, you can help reduce and virtually eliminate many of these issues. Pond aeration is a simple, yet effective process of increasing the dissolved oxygen in a pond.
Different species of fish require different levels of dissolved oxygen in a pond; however, what they all have in common is they all need some level of dissolved oxygen and generally the higher, the better. Many fish kills occur in the winter because the amount of dissolved oxygen decreases to deficient levels. But with aeration you can be rest assured that there will always be oxygen entering your pond water, providing your fish with a healthy environment.
Aeration has been proven to help reduce algae, as many types of algae prefer, stagnant, warm, nutrient-rich and low oxygenated waters. When you install aeration, the water is mixed and pulls algae spores down towards the bottom of the water column, reducing the amount of time it is exposed to valuable sunlight. The mixing of the water also pushes cold water from the bottom up towards the surface, which in turn lowers the overall temperature of the entire water body.
Have you ever heard of Duckweed? You may have mistaken Duckweed for a green floating alga, but in fact, Duckweed is a small aquatic plant that floats along the surface of the pond. It can become so dense that it will cover an entire ponds surface. Duckweed loves stagnant water with high nutrients and can be difficult to remove. However, since aeration circulates the water's surface, it creates an environment that is not suitable for Duckweed to grow. Therefore, once you install aeration, you will start to see the Duckweed begin to disappear!
Like we just said both Duckweed and algae love environments with high nutrients, therefore if you could reduce the nutrients, you would reduce the algae and Duckweed that will want to grow in your pond, and aeration does that as well! Phosphorous is one of the primary nutrients needed to support algae blooms, but once phosphorous enters a pond it is challenging to remove. However, aeration has been shown to reduce phosphorous by using an oxidation reaction which causes the phosphorous to bind with naturally occurring iron in the water. Once the phosphorous is bound to the iron, this new form of phosphorous precipitates into the sediments where it remains unavailable for plant and algae growth as long as high dissolved oxygen levels are maintained. Since aeration circulates the water’s surface, it also reduces the amount of mosquito habitat! Which we can all agree is a good thing!
Aeration comes in a variety of styles, whether its surface aerators like floating fountains or aeration systems that sit on the bottom of the pond. Here at Pond Supply, we recommend fine-bubble aeration because the fine bubbles allow for more surface area which allows more oxygen to come into contact more effectively then course bubble systems. Plus, they are cheaper to operate, quieter and require very little maintenance.
As much as we love our floating fountains, they are not ideal for increasing the oxygen. Yes, they do add some oxygen into the water column, but they only circulate the top couple of feet of the water compared to the fine bubble systems which sit on the bottom of the pond and circulates the entire water column.
Now that you have more of an understanding of the benefits of aeration, the next step is to decide what types and sizes of aeration are needed for your specific water body. Contact us to discuss what is best for your pond.