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Fish Can Become Stressed In Water With A Ph Ranging From - Agriculture - Nairaland

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Fish Can Become Stressed In Water With A Ph Ranging From by frranklin: 9:21pm On Apr 06, 2022
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Fish can become stressed in water with a pH ranging from 4.0 to 6.5 and 9.0 to 11.0. Fish growth is limited in water pH less than 6.5, and reproduction ceases and fry can die at pH less than 5.0. Death is almost certain at a pH of less than 4.0 or greater than 11.0.

Water temperature influences the onset of fish spawn, aquatic vegetation growth and the biological demand for oxygen in ponds. As water temperature increases, it holds less oxygen. Additionally, plants and animals use more oxygen due to increased respiration rates. These factors commonly result in less available oxygen for fish during very hot weather.

Fish have an average blood pH of 7.4, so pond water with a pH close to this is optimum. An acceptable range would be 6.5 to 7.5.

Fish can become stressed in water with a pH ranging from 4.0 to 6.4 and 7.6 to 14.0.

Fish growth is limited in water pH less than 6.5, and reproduction ceases and fry can die at pH less than 5.0. Death is almost certain at a pH of less than 4.0 or greater than 7.5.

Pond water pH fluctuates throughout the day due to photosynthesis and respiration by plants in earthen pond.

Typically, pH is highest at night and lowest at morning. This is because nighttime respiration increases carbon dioxide concentrations that interact with water producing carbonic acid and lowering pH. This can limit the ability of fish blood to carry oxygen.


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