Water body is the living environment of fish, and its ph is the main index of fish pond water quality, which directly or indirectly affects the growth, development, reproduction and disease of fish.  Fish are most suitable to grow in neutral or slightly alkaline water, that is, the pH value is 6.5-8.5. The most suitable pH value for fish growth is 7.8-8.5, which is still within the safe range when the pH value is 6-9.  If the pH is below 6 or above 9, it has an adverse effect on fish.  

PH value is a comprehensive index of aquaculture water body, the normal daily pH value in the pond range of 1-2, too high, too low or change range is too large, will affect the growth of aquatic organisms.  In the process of fish breeding, the pH value is too high or too low, which will not only cause changes in the content of some chemical substances in the water, but even turn the chemical substances into toxic substances, which will be adverse to the growth of fish and the reproduction of plankton, but also inhibit photosynthesis, affect the dissolved oxygen in the water and prevent fish breathing.  aeration tube

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