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The importance of water quality testing in the aquaculture industry!

by:BOQU     2022-10-03

The importance of water quality testing in aquaculture: PH: Fish in aquaculture water with too low PH are particularly sensitive to infectious fish diseases, have difficulty breathing, and grow slowly. Excessive water is strongly alkaline, which corrodes the gill tissue of fish, causes breathing disorders, and in severe cases suffocates the fish. Strongly alkaline water also affects the activity of microorganisms and then affects the degradation of organic matter by microorganisms.

Nitrite: Nitrite is an intermediate product in the conversion of ammonia to nitrate, which is unstable and can be converted into nitrate, which is less toxic to fish under the action of microorganisms when oxygen is sufficient, but can also be converted to highly toxic ammonia nitrogen.

Elevated nitrite concentration, fish food intake decreased, gills dark purple, breathing difficulties, slow swimming, restless; too high concentration, the fish is weak, the fish is soft, the underside of the buttocks is yellow, some organ failure, In severe cases, it can lead to death.

Ammonia nitrogen: The main harm of ammonia nitrogen: if the concentration of ammonia nitrogen increases, it is mildly toxic to fish and easy to get sick. If the concentration of ammonia nitrogen is too high, it is more toxic to fish, which can easily lead to fish poisoning and even a large number of deaths. Phosphate: Phosphate is not toxic to fish.

However, high levels of phosphate can lead to the proliferation of algae in the water, which indirectly affects the growth of fish. Excessive blooms of algae can consume a lot of oxygen in the water, causing damage to the growth of fish. Phosphate has a more significant effect on algal growth than nitrate. The main source of phosphorus in water is the leftover feed that fish eat. The amount of fish feed can be adjusted according to the phosphate data index. The ideal phosphate level should be below 0.05mg/L.

Dissolved oxygen: Sufficient dissolved oxygen in the water can inhibit the formation of toxic substances and reduce the content of toxic substances. When the dissolved oxygen is insufficient, ammonia and hydrogen sulfide are difficult to decompose and transform, and it is easy to reach the level of harming the healthy growth of fish.

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