Causes, hazards and treatments of abnormal PH values in fish ponds
Article source: Ollies (Guangzhou) Recreation and Sports Equipment Co., Ltd Popularity: (Click 816 times) Service Hotline: (020)82686289
After Qingming, the temperature is getting higher and higher as the rainy season comes to an end. For koi farming the PH value of the pond is getting higher and higher during the high temperature period. Besides the strong sunlight, the algae also have strong photosynthesis, which all consume a lot of carbon dioxide in the water, resulting in a constant rise of the PH gas value in the water. The reason for the high PH gas value in summer is simple, because the water is too thick and there is too much algae.
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- There is already a certain amount of algae in the new water, but the water quality has not yet stabilized and tends to be on the high side.
- Water bodies rich in blue-green algae tend to rise above 9.5 pH by about 5 p.m. due to very strong photosynthesis.
- Water contaminated with alkaline substances will also have a high pH value. Symptoms of alkalosis in fish: irritation and wild swimming, a lot of mucus on the surface of the body can even be drawn into a line, gill cover corrosion damage, gill secretion of a large number of condensate, the water is alkaline, the general PH value is greater than 9, there are a lot of dead and dying algae and algae cells in the water body.
2.Low or too low pH
(1) Pool water with long breeding time and low transparency, low pH value, even in the afternoon does not reach 7.5.
(2) Pollution by acidic substances. Symptoms of acidosis in fish, the body color is obviously white, aquatic plants show brown or white, the transparency of the water body increased significantly, the water body is acidic generally PH value is less than 4, the water body has in many dead and dying algae and algae cells.
3.Prevention and control of PH abnormalities
(1) Frequent testing of the water body PH value changes, preferably once a day in the morning and evening, once the anomaly should be timely to find out the reasons and take effective measures.
(2) It is best to wait for the water quality to stabilize before releasing fish species in new water.
(3) Water with blue-green algae should be controlled or replaced in time to cultivate new algal phases, and inorganic fertilizers should be applied when necessary.
(4) breeding time is too long pool, silt organic matter is too much this time to increase the appropriate amount of water, if necessary, clean the bottom of the pool and sprinkle some lime to improve the PH value.
(5) When the PH value has been very high, there is no other way to consider the use of acetic acid and other non-toxic weak acid can also be considered to reduce the PH value.
(6) Approaches to pH regulation in saline soils.
① Try not to use water sources with high PH value and higher alkalinity, and if possible, use water exchange to prevent the PH value from being too high.
② Fish ponds with saline soil should not be cleared and disinfected with quicklime to prevent the PH value from rising.
(iii) Remove macroalgae such as euglena, Polygonum and Verticillium in fish ponds. Reduce photosynthesis to avoid a large increase in PH value, because algae under high temperature and strong sunlight to carry out vigorous photosynthesis, so that the water body in the short term PH value increased significantly.
④ To control the overpopulation of floating plants, use copper sulfate 0.5-0.7ppm for full pool splashing.
⑤ Emergency relief measures can be appropriate amounts of acetic acid or hydrochloric acid can be splashed to neutralize the PH value to prevent alkali and ammonia poisoning.
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PH value in aquaculture, how to adjust the PH value of aquaculture water bodyPH value (acidity and alkalinity) is an important indicator of water quality in fish ponds, which not only directly affects the physiological activities of fish, but also indirectly affects fish by changing other physicochemical and biological factors in the water environment.
Fish are best suited to grow in neutral or slightly alkaline water of 7.5-8.5, and if the PH value is below 6 or above 10, it will be harmful to the growth of fish. The following is an introduction to the hazards of PH value discomfort and its solutions.
1. The harm of low PH value and solutions
PH value is too low, acidic water body is easy to cause fish infected with parasitic diseases, such as ciliosis, flagellosis, followed by phosphate solubility in the water body is affected, the decomposition rate of organic matter is slowed down, the reproduction of natural bait is slowed down, and then, the gills of fish will be corroded, the acidity of the fish blood is enhanced, and the ability to utilize the oxygen is reduced, even though the water body has a high level of oxygen content, it still results in the fish hypoxia floating head, the fish's activity is weakened, the utilization rate of bait is greatly reduced, affecting the normal growth of the fish. The utilization rate of bait is greatly reduced, affecting the normal growth of fish.
Preventive methods are: First, you can drain the old water in the pool, injecting new water repeatedly 2-3 times to regulate the PH value in the water body. The second is to splash lime water every half a month, both to regulate the pH of the water body, but also to prevent fish disease.
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2. The danger of high PH value and solutions
A high pH will increase the toxicity of ammonia and provide conditions for the production of blue-green algae blooms, and a high pH may also corrode fish gill tissues and cause mass mortality.
For preventing the PH value of the water body from being too high, there are several feasible methods: establish a strong fish pond filtration system, which shall be physical filtration + biochemical filtration + a strong ultraviolet sterilization system to promote the microbial ecological balance in the water body. Alternatively, use about 0.5 kilograms of Ming Kung per mu of water to regulate, or splash with dilute hydrochloric acid or acetic acid, or apply more organic matter to fertilize and regulate the alkali, and when preventing and controlling fish diseases, lime should not be used, and it is advisable to use bleaching powder and Chinese herbs.