Aeration of ponds and lakes with efficient aeration systems is necessary to maintain water quality and the health of the organisms that live in them. To understand why lake aeration is so important, it helps to know what goes on in these small bodies of water and what it takes to keep them healthy.
Ponds and lakes are not just streams full of water. Regardless of size, your body contains an entire ecosystem that requires care and maintenance. In reservoirs with strong and deep currents, nature can provide sufficient aeration without human assistance, but in lakes and ponds this is rarely the case. If they are very deep, these small reservoirs usually form a no-circulation zone at the bottom, where the oxygen in the water inevitably decreases.
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In some cases, there is no natural circulation in the tank at all and aeration of the pond or lake is necessary to help nature develop and ensure that the water is fully oxygenated. To understand why ventilation is important, it helps to think about what would happen without it. First, there is the problem of excess nitrogen. Nitrogen is a chemical found everywhere in nature and is necessary for plant life.
However, if nitrogen levels in your pond or lake are too high, they can reach toxic levels and kill your fish. This can be easy because every leaf and stick that enters the water contains nitrogen. This includes lawnmowers entering the water and fertilizers applied to the lawn can enter the water and further increase nitrogen levels. When all of these factors come into play, there can be enough chemicals in the water to kill fish.
Another problem that can pollute your lake or pond water is algae growth. Green algae is one of the biggest causes of water contamination in small tanks. Not only does algae make water smell and look dirty, it also absorbs a lot of oxygen from the water, causing the oxygen deficiency problem mentioned earlier. Nitrogen contributes to this problem because it is a nutrient for plants, and as levels rise, so does algae. These include phosphates, the chemicals used to break down fish waste, fertilizers and fish feed.
The best defense against these problems is proper aeration through large lake aeration systems or pond drain systems. Aeration helps reduce nitrogen and phosphate levels in the water and helps replace oxygen depleted by excessive algae growth.
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