CATDOLL : CATDOLL: Can koi be raised in a cement pond?

1. Can koi be raised in a cement pond?

You can raise them, but you have to change the water. I wanted to raise them 5 or 6 years ago. I disinfected them with formaldehyde and potassium permanganate and then put fish in them. I tried it a few times, but they always had white spots and rotten tails and died. I also looked for advice online, but it was all in vain and I lost confidence. A few days ago, I heard from a friend that I should disinfect them with high-concentration salt water and put four fish in them. Now the fish are still lively. Today, I found this forum through the goldfish forum. I am very happy. Please give me some advice.

2. What is the breeding method of Japanese Koi? How to treat the water quality?

In fact, koi are not difficult to raise. As the old saying goes, people who don't know how to raise fish can also keep koi alive for one to two years. But it doesn't mean that they can be raised in a rough manner. It should be emphasized that koi consume a lot of oxygen. If they are raised in an aquarium or other small containers, the stocking density is high, and an inflator is a necessary equipment. Koi have a lot of excrement, so they should be raised in a bare tank, and a water filter device is also necessary. Koi swim fast and like to jump. Decorations that may cause harm to koi and the fish tank should not be placed in the fish tank, and the container should be covered. The minimum requirement for choosing a fish tank is also 80 cm long (this tank can only hold 2-4 koi of 20-25 cm in size). It would be best if you can use a larger container, of course, because you have to consider the issue of whether the koi should stay after they grow up. But if you don't even have an 80 cm tank now, it doesn't matter. First, successfully raise the fish, and then make plans.

To raise Koi well, the key is to choose the fish. Buying small fish of 10-20 cm will have the highest success rate of keeping them alive. When choosing fish, you should see if the water is too muddy and if there are a few rotten fish in the fish school. If this is the case, you don't need to look at the fish in the pond. If you pass this test, you can quietly watch the fish you want. Do not buy fish with short and big heads, flat and blunt mouths, skinny or bloated bodies. Choose fish with a symmetrical body, active swimming posture and bright eyes. Cheap fish usually don't have good colors, as the saying goes; you get what you pay for, but the body condition is still good. After choosing the fish, remember to ask the store to add oxygen to your fish. After bringing the fish home, don't rush to open the bag. Put the whole bag of fish on the surface of the water for 45 minutes to 1 hour to let the fish slowly adapt to the water temperature, then open the bag and let the water gradually mix with the water in the bag before releasing the fish.

In the next few days, the water is most likely to become turbid. It is best to change 1/2-2/3 of the water every day. If your fish tank is too large and it is difficult to change such a large amount of water, you can use a suitable small container to temporarily keep the fish for two weeks. When you see that the fish's condition begins to improve, then scoop the fish into the permanent container. Remember to balance the water temperature of the two containers before scooping the fish. Whether it is temporary or permanent, it is best to put enough activated carbon in the water filter, which is to minimize the amount of harmful substances. After the fish are stable, if you use a small container such as an aquarium to keep koi, depending on the water quality, it is best to change 1/8-1/3 of the water every 4 or 5 days. This is very beneficial to the healthy growth of koi and keeping the water clean.

In the whole process of raising koi, it is generally not necessary to add preventive drugs. Blindly applying drugs will only kill the fish. When individual sick fish are found, they should be isolated in time, observed for a few days, and then given the right medicine. When giving medicine, the activated carbon should be taken out. The medicine should be light rather than strong. Pay attention to observation. Once the fish have any discomfort, change the water in time. Commonly used drugs include: Royal Fish Treasure Universal Medicine (the main ingredient is methyl blue), yellow powder, potassium permanganate (adjust the bath water to pink).

Koi should be fed two to three times a day, and the amount of food should be such that they can finish the food within ten minutes each time. It is recommended that you buy bulk spices (a mixed granular feed, brown with a fishy smell).

3. I want to build a 20 square meter cement pond for red and white koi breeding. Please advise how to breed them.

If it is convenient to discharge sewage, generally one part is dug underground and one part is on the ground, and the filtration is considered. Bottom drainage pipe and filter pool are set up. . . .