How to raise water for goldfish

The water quality requirements for raising goldfish

As the saying goes: "Raise fish first, raise water." If you want to raise goldfish well, you must first have a full understanding of the water environment suitable for goldfish growth.

Goldfish are eurythermal fish and have a wide adaptability to temperature, and can survive in water temperatures of 0-38 degrees. The optimal growth temperature is 20-28 degrees. When the water temperature exceeds 30 degrees, it will feel uncomfortable, and the mortality and morbidity rates will increase significantly. When the water temperature is below 4 degrees, it will start to hibernate. Although goldfish have a wide adaptability to water temperature, they cannot tolerate instantaneous changes in water temperature. Generally, the daily temperature difference should not exceed 10 degrees, and the instantaneous temperature difference should not exceed 1-2 degrees. Therefore, the newly purchased goldfish should be placed in the water together with the packaging for 1-2 hours, and the water temperature inside and outside the packaging bag should be consistent before being placed in the tank for breeding.

Goldfish’s water quality requirements.

Goldfish require a pH range of 5.5-9.5 in water, but they like neutral to alkaline water quality, and a pH of 7.5-8.5 is appropriate. Cl ions in the water are also one of the factors that can lead to goldfish poisoning and death. Therefore, the tap water used for raising goldfish should be exposed to the sun for about 24 hours or left to dry for 2-3 days before use. Baking soda can also be added to the water to remove the cl ions.

Dissolved oxygen in the water is another important factor that affects the growth of goldfish. Its deficiency will cause the goldfish to grow slowly, float, and even cause death in severe cases. Therefore, wait for dissolved oxygen in the water on rainy days or nights. When it is lower, it is time to turn on the aerator to increase oxygen.

Water temperature, water ion content and dissolved oxygen are the three major influencing factors in the living environment of goldfish. By grasping these three points, you can create a warm and comfortable living environment for goldfish.

Notes on how to change the water for goldfish

Goldfish are typical ornamental fish. The environment they live in completely depends on artificial provision. If the artificial environment is not suitable, it will not be able to survive. Survive. Goldfish generally live in a fixed small environment. This small environment is unstable and can change at any time. For example, after the neutral water (pH value 7) is put into the fish, the fish will continue to discharge feces and food residues into the water. , after the action of bacteria, it continues to decay, and the water quality transforms into slightly acidic, so neutral water only exists for a short time. Other conditions, such as water temperature, dissolved oxygen, etc., are also constantly changing due to the influence of the external environment. In order to ensure that goldfish live a normal life, the water quality must be adjusted by changing water. How to change the water for goldfish and when to change the water is an important task in raising goldfish. How well this work is done is the key to the success or failure of raising goldfish.

Be aware of the following points when changing water on a daily basis:

(1) Prepare a pool (or tank, basin, box, etc.) for drying water, and store the newly obtained cold water in it to dry 2 ~3 days to allow various impurities to precipitate, chlorine to evaporate from the water, and to raise the water temperature to the same temperature as the fish pond before it can be used as replacement water for fish farming.

(2) The amount of water change depends on the season and water quality. For example, in spring, the water temperature is low, the dissolved oxygen in the water is high, but the oxygen consumption of fish is low, so the amount of water change at this time is only 1/10 of the total amount; as the temperature rises, the fish activity becomes larger, The metabolism is strong, the food intake is large, and the excretion increases. At this time, the amount of water change can be increased to about 3/10. In summer, the water temperature of the fish pond increases, and the oxygen consumption of the fish also increases. Goldfish are prone to "floating" due to lack of oxygen. At this time, the water change amount can be increased to about 3/10. The amount of water should be increased. In addition, it is necessary to lower the temperature of the water, replace it with a certain amount of cold water, or set up a spray device, or start the air pump. If the water is smelly or pink, it is best to replace it entirely. Fish that are changed to new water generally need to adapt to a few days before they can eat normally. Under normal circumstances, do not change all the fish to new water.

(3) The best time to change the water is after 4 pm, when the fish swim for a while after eating. Before changing the water, clean the remaining residue in the pool and then add new water.

(4) When changing the water, be sure not to pour or rush, and do not rush the water onto the fish's body to injure it.

Detailed explanation of how many days to change the water when raising goldfish

Predecessors of goldfish raising have long had the experience of "raising fish first, raising water", which shows that the quality of the water will directly affect the quality of the water. Affects the normal growth and development of goldfish. The purpose of changing the water is to remove dirt (garbage, fish feces, remaining feed, and old impurities) in the water, keep the water clean, adjust the water temperature, and increase oxygen in the water, thereby stimulating the growth and development of goldfish.

If you want to raise goldfish well, you must have a preliminary understanding of the fish breeding water:

1. Raw water

Refers to tap water or well water that has just been released but has not been dried and processed. The water temperature is often quite different from the water temperature in fish ponds (tanks), and it contains more chlorine. This kind of water is extremely harmful to goldfish.

2. New water

It is tap water, well water, or spring water that has been left to settle in the sun for about 2-3 days, and is clean water that is equal to or similar to the water temperature of the fish pond (tank).

3． Old water

is the dirty water containing feces and dirt at the bottom of the fish pond (tank). Including the feeding water in the pool (cylinder) that has not been changed for a long time.

4． Old water

is the general name for clean and tender green, green, old green or green-brown water in fish ponds (tanks). Among them, tender green water is the best. There are more green algae floating in the old water, which are also good supplementary feed for goldfish.

This kind of water has less putrefactive and decomposed organic matter and more dissolved oxygen. Fish are often raised in tender green and clean old water. The fish raised have the strongest appetite, strong body, bright color and rapid development.

5. Return to clear water

If you find that the old green water in the original pool (tank) suddenly turns into clear water, and many green algae settle at the bottom of the tank, this phenomenon is called return to clear water. Clear water. This kind of water can easily cause fish diseases and needs to be completely replaced.

(1) Under normal water changes, especially in hot summer, you only need to suck out 1/10 of the feces and dirt at the bottom of the fish pond (tank) together with the old water with a hose every day, especially in hot summer. -1/5, remove dust and floating feces from the water surface, and then slowly inject isothermal new water along the wall of the pool (cylinder) to keep the water quality clean. This water changing method is not easy to harm the fish body, is simple and safe, and is most suitable for fish farmers in home fish tanks or small ponds.

(2) Partial water change This water change method is mainly performed in two situations. One situation is that in the hot summer and early autumn, the feeding water in the fish pond (tank) has been changed for only a few days, and the water color turns green very quickly (due to the low feed amount), and the water quality is still clean. In order to prevent Goldfish have permed their tails, so you can fish out all the goldfish in the pool (tank), then turn the water in the pool (tank) in a spiral shape, wait for a while, and then remove the dirt and debris in the center of the pool (tank). Use a rubber tube to suck out 1/3-1/2 of the water, then inject isothermal and equal amounts of new water, and then fish the goldfish into the original pond (tank) and raise it.

Another situation is that the water in the pool (tank) has only been changed for a few days, and the water color is still good. However, due to excessive feeding that day, emergency measures must be taken when floating heads appear. The method of changing the water is the same as mentioned above.

If it is a large fish pond in a fishing ground, there is no need to fish out the goldfish, but use a folding net to surround the fish, and then use a fishing net to gently rotate the water in the pond for dozens of seconds. Wait for the water to stand still for a moment, then open the drainage gate and slowly release the water, or use a straw to suck out the excess fish, worms, feces and old water in the center of the pool (tank), or use a fishing net to remove the excess fish and worms from the center, and then release 1 /4-1/2 of the old water, and finally inject the same amount of isothermal new water. This method is commonly used in fish farms or families as a first aid method when too much food is fed.

(3) Complete water change This water change is often combined with turning over the pond (tank) and selecting juvenile or adult fish at the same time. It is often used when the water quality is seriously deteriorated or the moss is too long and the fish are too dense. There are two specific methods:

1. When there is no free pool, you have to fish all the goldfish into a basin or put the cage into the water of a neighboring pond to temporarily raise it, and add an aeration head to the basin or cage to increase oxygen. Then, brush off the moss on the wall of the original pool, rinse it thoroughly, re-inject new isothermal water, let it sit for a while, and then fish the fish into the original pool (tank) after the water temperature becomes equal.

2. If there is a free pool and new water, you only need to fish all the goldfish into the basin or cage, select and handle them separately, and then move the goldfish into the new water after the water temperature of the pool is equal, regardless of the pool. Feeding. This method of water change should pay special attention to the water temperature, and it is best to do it before 9 o'clock in the morning on a sunny day. However, this method is generally only suitable for adult fish or larger juvenile fish, and should not be used for larvae. If conditions permit, before completely changing the water, you can first fill the spare pool (cylinder) with water, and then fish the fish directly into the spare pond (cylinder). In this way, the water temperature changes little, the fish can easily adapt to the new environment, and the fish can avoid being squeezed in the basin or cage. This water change method is generally performed every half month or so in spring and autumn. In summer, when the weather is hot and the water temperature is as high as 28°C or above, and the water color is very easy to become thick and the water quality is very easy to be turbid, the water should be completely changed once every 5-7 days. In winter, when the water temperature drops to about 4°C, goldfish move slowly and have reduced appetite. The water quality is not easy to deteriorate. Generally, all water is not changed unless there are special circumstances.