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SRAC# 370

Pond Aeration

Gary L. Jensen, Joseph D. Bankston and John W. Jensen


Opening Paragraph:
Oxygen in ponds comes from two sources--photosynthesis and diffusion from the air. The most important source is photosynthesis which is the process plants use for manufacturing food. In the presence of sunlight, plants (especially algae) add oxygen to water as a by-product of photosynthesis. At night, no oxygen is produced, but respiration of algae, fish and bacteria continues to remove oxygen from the water. Most of the time there is a desirable balance between how much oxygen is produced and how much is used, but under some conditions, the balance can be upset, and the oxygen concentration becomes low enough to stress or kill fish.
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