How to raise fish and water?

It has become an indisputable experience to raise fish first and then water. How to "raise" a mouthful of clear and nontoxic water at home is very important. Family fish farming is different from fish farming. The water space is narrow, and the water quality is required to be clear and transparent, which is convenient for viewing goldfish. Fish farms raise fish to make goldfish grow quickly. There are professional fish working hours to monitor the water quality, and the water body is wide and suitable for goldfish growth. Family goldfish has its own advantages. For example, the water temperature, because family fish farming is generally indoors, is not affected by wind and rain. Moreover, raising fish at home is convenient for water quality observation and drug control because of the small amount of water. Raising water for domestic goldfish is mainly related to the following five factors.

1 filtration system: Due to the high density of fish farming in China, it is difficult to remove impurities and wastes from water simply by decomposing water itself. Establishing a good filtration system can effectively maintain water quality. A good filtration system can integrate chemical, biological and physical filtration methods. Chemical filtration relies on special drugs to condense tiny suspended impurities in water, so as to precipitate them or physically filter them out. Bio-filtration is to use beneficial biological flora to decompose waste in water and decompose harmful substances into harmless substances. Physical filtration is to adsorb and filter out impurity particles through the tiny pores of the filter material. According to the characteristics of goldfish and family fish farming conditions, the following methods can be used to establish a filtration system. According to the size of the aquarium, an external filter is configured, which can be overhead or a filter bucket. The flow of water can be found in the description of the pump. Generally speaking, it is advisable to circulate water about 7 times per hour. For example, the volume of an aquarium with a length of 80, a width of 40 and a height of 40 is 1.28 liters, and the flow rate of the filter pump is 900 liters/hour. For larger aquariums, in order to prevent the water from flowing too fast, it is suggested to install a built-in filter at the entrance and an elbow at the exit to reduce the impact of the water on goldfish. Biochemical sponge and activated carbon are put in the filter box (barrel) and replaced according to the degree of water pollution. But too frequent replacement is not suitable for the establishment of beneficial biological flora. Generally 1 month can be replaced once.

Biodecomposition: In the natural environment, a large number of beneficial bacteria are attached to the places where rivers flow, and they can decompose metabolites and foreign pollutants produced by aquatic organisms. Keep water clean and harmless. Establishing beneficial flora in the aquarium can keep the water quality for a long time without changing water frequently. Adding nitrifying bacteria to the aquarium is a shortcut to establish a biological decomposition system. Nitrifying bacteria sold in the market are mainly divided into two categories, active nitrifying bacteria and artificial nitrifying bacteria. Active nitrifying bacteria take living flora as the main substance. Artificial nitrifying bacteria are substances that promote the growth of nitrifying bacteria in water. Active nitrifying bacteria take effect for a short time, and generally the effect is most obvious when the water temperature is 25-30 degrees within 2-5 days. But the storage time is short, usually less than 12 months. Artificial nitrifying bacteria have a long storage time, generally about 2 years, because they do not contain active strains. But it takes a long time to take effect. Before the establishment of biological system, water quality clarifiers can be used in combination.

3 fish density: no matter how big the fish tank is, the number of goldfish raised is limited. Goldfish are lively and active, and can eat and pull. The water quality of small tropical fish is difficult to maintain. Reasonable breeding density is very important for beginners. Usually 1 year-old goldfish will take up 10 liter of water. That is, an aquarium with a length of 80, a width of 40 and a height of 40 has a volume of 128 liters and can support 1 fish 12. No matter how high the density is, it is difficult to maintain water quality for a long time. In addition, different goldfish species have different requirements for breeding density, and rare species such as pearls, butterfly tails and blisters have smaller breeding density.

4 feed selection: goldfish feed also has a great relationship with maintaining water quality. Goldfish are omnivores. Food covers a wide range. Mainly includes: Daphnia, nematodes, hemoglobin, pellet feed, powder feed, sheet feed, etc. Live Daphnia is the best choice. Not only in food intake, Daphnia can also suck organic suspended solids in water. Moreover, the metabolites produced by goldfish are not easily dispersed. Nematodes, red blood worms and powdered feed may be attached to the sand bed or suspended in water, which is not conducive to the cleaning of water quality. High-quality synthetic feed will contain yeast, which can quickly decompose the metabolites of goldfish and help maintain water quality. Inferior synthetic feed not only has no nutrition, but also contains artificial pigments, which will discolor water. In addition, it is best not to use edible fish feed, such as crucian carp feed for goldfish, which will also pollute the water quality. When feeding, the filter system should be closed to avoid being sucked into the filter box, which will not only cause waste, but also mold and produce toxic substances in the filter box.

5. Fish culture environment: lighting, scenery, etc. It is also related to maintaining the water quality of the aquarium. Excessive light will cause a lot of algae in the water. Proper curtain covering and regular cleaning will be effective. Proper placement of sand bed at the bottom of aquarium will also be beneficial to water cleaning. It can not only adsorb impurities, but also provide a hotbed for nitrobacteria. Generally, the thickness is about 4 cm, and the particles are about 4 mm. The sand bed is too thin to be adsorbed. Too thick sand bed will make the bottom sand bed lack oxygen and cause biological corruption. If the particles are too large, the feed will sink into the gap, which is not conducive to goldfish eating; Too small is not conducive to the oxygen transfer between water flow and particles, and is also not conducive to the growth of nitrifying bacteria.

Pay attention to the above points, and you will definitely have a clear water tank to create an ideal living space for your beloved fish.

Water lifting skills:

Quickly establish benign water quality: add water quality stabilizer to tap water and put it into aquarium when the water temperature is the same as that of old water. Release active nitrifying bacteria, and put them into water quality clarifier for filtration after 1-2 days. Then add artificial nitrifying bacteria every week.