Definition of "good water" for fish farming

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Definition of "good water" for fish farming

What kind of water is to raise fish "good water" every fish people have their own views, as a qualified fish, should have a comprehensive and objective understanding and understanding of fish water, then what kind of water is good water to fish?    How to judge good water by sensory judgment and detection? I will do a full and detailed elaboration in this article. The good water I define should have the following conditions:first, sensory judgmentThe most direct way to judge the water quality of the aquarium is through the eye nose smell to carry on the sensory judgment, this is the basic skill that each fish fishes must have, the sensory judgment to the water quality includes following several aspects:1, the water is clear, flexible and not greasy. Judging the quality of water is the first thing to see is the clarity of water, good water contains less suspended particles, give people the feeling is clear and translucent. Flexible and not greasy refers to good water has a certain toughness, Feishou moderate, not like pure water as thin without a little other substances. Not greasy refers to water quality can not be too fat, the surface can not appear oil film, foam, protein insects, and bacteria and algae outbreaks and other water and fertilizer phenomenon.2, slightly aquaThe basic skill of water-keeping is to look at Aqua, the real good water is slightly aqua, this is the mark of ripe water. What do you mean, keep water? Water is in the culture of bacteria, not only to keep nitrifying bacteria, but also to raise other conducive to the maintenance of water quality of various microorganisms. If the water in the tank is as colorless and transparent as pure water, it means that the water is too thin and the amount of bacteria in the water is too little, not the good water we want. Aqua is determined by the species and quantity of plankton, mainly a variety of algae, diatoms, green algae, bare algae, hidden algae, algae, etc., good color should be very light tea brown, yellow green, oil green, and appear gray-white, gray-yellow, black-brown for Badwater.3. Normal odorGood water should be basically tasteless, or with a hint of fishy smell, if there is a strong smell, fishy taste, or even the taste of ammonia water, there must be a problem.second, the detection index1, ammonia and nitriteNow everyone to say who water good first will think of who's water clearer, water clarity to judge the quality of water. In fact, this is a wrong point of view, water clarity is important but it is not judged the quality of the decisive indicators, because even if the water is not clear, even if the water ph and hardness is not ideal, and so on, these are not fatal to fish. But the poison in the water can directly to the life of the fish, we spent so much money to configure the fish tank filtration system, buy filter material, culture nitrifying bacteria for what?    It is mainly used to remove toxins from the water. "Non-toxic" is the most basic condition to raise fish good water, but also the most important indicator. Toxin index is the decisive index to determine the quality of water, is ranked first. As long as the toxin is detected, no matter how clear your water is, it is not good for fish.the existence of the toxin indicates that the nitrification system has not been established and sound, water has not been raised, the real good water toxin of fish farming indicators should be zero. The determination of the toxin index of water with the naked eye is not visible, it must be detected using a test fluid. Water quality toxin detection reagent I think it is one of the necessary detection methods, testing reagents including ammonia test fluid and nitrite test solution two (fig). Fish live in the water, just as people live in the air, if the air is full of poisonous gas people are not alive, the same is true of fish. So what are the toxins in the water, and how are they produced?The toxins that are deadly to fish are ammonia and nitrite, both of which are highly toxic, and very low concentrations can cause fish to die. When the ammonia concentration exceeds 0.012 mg/l, the fish is at risk of poisoning, the nitrite content below 0.1 mg is safe healthy water quality, 0.1 mg is slightly polluted, 0.25 mg above the serious pollution, 1 mg or above aquatic organisms will begin to die.The toxin is produced in this way:Fish respiration, urine and fish feces and residual bait and other organic matter, will make a large number of aquatic bacteria breeding, the metabolic product of the heterotrophic bacteria is highly toxic ammonia. In a mature nitrification system, ammonia will immediately be decomposed into nitrite, and then by nitrate bacteria decomposition into nitrate, nitrate toxicity is very low, can be reduced by changing water, this is why we need to change the water tank reason.2. Flora StructureIt is said that the essence of water-keeping is bacteria, so the structure of bacteria in the water is crucial. Why do some fish tanks always get sick? This is in addition to the fish's physique, but also a very important point is the fish tank in the flora structure. When pathogenic microorganisms in the fish tank mass reproduction, those who are not strong resistance of the fish must be sick. The ideal flora structure should be the dominant probiotic bacteria, forming a strong bacteria in the tank to suppress the growth of pathogenic microorganisms. The number of colonies is measurable, and the national Fishery Water Quality standard stipulates that the total Coliform group does not exceed 5,000 per liter of water. In our daily fish farming this indicator does not do, but we can add em bacteria and other biological agents, biological means to control the number of pathogenic microorganisms, so as to create a good ecological environment for the fish tank.3.PH PHis a very important indicator of the waterPHThe value determines the number of fish in the bloodPH, while the fish kept in the bloodPHThe value of acid-base balance is the most important physiological characteristic of fish. Ph6-8 is a good water for fish, the average city tap water ph of about 7, suitable to raise most ornamental fish.maintaining PH stability within a reasonable range is a basic requirement for us to "keep good" fish. If the ph of the fish is rapidly changing in the short term, it is commonly known as "PHShock ", the fish will occur acute acid (alkali) poisoning, will be killed. In addition, the acid drop of water quality is also an important factor causing the disease or death of fish, soPHThe daily monitoring is a very important topic, want to raise a good fish prepare aPHPen is very necessary.4, the hardness of waterWater quality varies from place to place, and the hardness varies greatly. The hardness of water andphThe values are closely related, the water quality in southern China is soft and slightly acidic,PHGenerally in6.5-7.0Between. The water quality of North China is hard and alkaline,PHGenerally in7.0-8.0Between. In addition to a few African three lakes fish like hard water highphThe water quality, most tropical fish like limp water quality, the general situation can drink water hardness are suitable for fish, commercially availableGHHardness testing reagents can be very convenient to detect the hardness of water quality. The hardness of water has an important effect on the physiological function of fish. It can influence the osmotic regulation system of fish, change the brine balance of fish body, affect the absorption of calcium, and hatch eggs. The hardness of water also has an effect on the toxicity of certain pesticides, which generally weaken the toxicity of pesticides but increase the toxicity of ammonia.5. Dissolved OxygenDissolved oxygen in water is an important index of water quality. The dissolved oxygen in the fish water body 24 hours a day, must have more than 16 hours more than 5mg/l, any time not less than 3mg/l. Dissolved oxygen insufficiency, will make the fish appetite decrease, the physique drops, the disease resistance reduces, when the dissolved oxygen in the water drops to 1mg/l about, the fish will float the head. This indicator is usually in the family to do not test the fish, when the fish as long as the filter to ensure that the normal work, water flow will not be anoxic, more fish when the oxygen.6. TemperatureMany people do not take this indicator as a matter of fact, this is not true, for tropical fish, temperature is very important indicators, and is to be constantly monitored indicators, tropical fish temperature span is very wide, according to the different species of the temperature is different, 18-32 degrees can be kept different species, temperature is suitable for the basic conditions of tropical fish. Finally, a summary:fish "good water" should be: water quality is non-toxic, clear and transparent flexible and not greasy, smell normal can be slightly aqua, contains a lot of beneficial bacteria, dissolved oxygen rich, temperature suitable, hardness ph and other physical and chemical indicators qualified water.

Definition of "good water" for fish farming