Ponds and watergardens are miniature ecosystems that contain all forms of life, including the plants, animals and bacteria. All these living organisms require oxygen; that is why It is necessary to maintain an adequate concentration of oxygen in the water to preserve the health of the ecosystem of the pond.
A healthy pond provides water first quality The expulsion of fine bubbles of air from the bottom of the pond causes thoroughly mix the pond by breaking the thermal stratification the water column. The movement of water that is created exposes, level the surface, bacteria that are so destroyed by the action of radiation UV from the Sun.
Aeration can also contain algal populations since it prevents of an anoxic layer at the water-sediment interface and, in doing so, it prevents the release of phosphorus present in the bottom of the pond, which makes it less available for algae and thus limit the development. Finally, aeration also prevents the solubilization of iron from the sediments and, consequem- ment, reduces damage to equipment or equipment-related problems.
All plants and animals use oxygen to breathe. However, it is the decomposition of the organic material to the bottom of dugouts that consumes the most of oxygen. When plants and animals die, they fall to the bottom and decompose. This process of decomposition consumes large quantities oxygen, which explains that it is at the bottom of the pond the concentration of oxygen is low.