Small ponds are difficult to manage. Lakes have dynamic forces of wind, water currents, stratification changes and biota that help maintain physical and chemical characteristics of water. Ponds are often too small to have all of the natural processes that occur in larger bodies of water. As users we often expect more from our ponds than other bodies of water-we want to swim, fish and enjoy crystal clear water!
As ponds age, organic mater builds up, aquatic plants decay and soil can wash into ponds. All of these thing can lead to depleting the oxygen level in a pond. Just as a healthy compost pile needs to be turned to add oxygen to assist in break down of materials, so does a pond.
It is very easy to increase oxygen levels in an existing pond to improve water quality and fish health. There is a variety of aeration equipment that we regularly install that is produced by Kasco Marine. There are different products for types, sizes and depths of ponds that increase oxygen levels in the water by circulating, de-stratification and mixing.
There is a lot to know about this subject. You can contact Eco-Building & Forestry at 715-344-2817 for more information on aeration that is right for you and your pond.
It befuddles me that trout can’t survive in a deep pond unless it’s spring fed. Seems like 14′ of water with a diffuser aeriation would provide cool water and oxygen enough to sustain trout. What am I missing here?
I’m not a trout expert and I don’t know your particular situation, but there are some things to consider. Trout are often raised in raceways where large volumes of very cold, oxygenated water from deep wells is pumped through the system. This process mimics trout streams found in nature. Aeration systems in ponds mix the water both physically and chemically to be homogeneous. So, while aeration is beneficial it can make pond temperature uniformly warmer during the summer and unsuitable for trout. We do offer consulting services tailored to pond owner’s needs as part of our business if you would like further assistance.