CATDOLL : CATDOLL: I have 7 fish in a 1m fish tank. I use a submersible pump. I just added an air pump and it has been a week but it has not worked at all. I used to use a 3-in-1 pump for the 80m tank.

1. I have 7 fish in a 1m fish tank. I use a submersible pump. I just added an air pump and it has been a week but there is no effect. The original 80m tank used a three-in-one pump.

You have seven foodies in your tank, including a silver arowana, a map fish, a big cat, and a lohan. In this case, it only means that your filtration is not enough. There are several ways to improve it. The first is to change the fish tank to one with a bottom filter system of 1.5*0.6*0.6 or above, but you can give up this one.

The second is to improve the filtration system. Upper filtration plus reverse air lift is a classic combination. The problem lies in the coordination of physical filtration and biochemical filtration. You should have a finished tank upper filtration. It is recommended that you clean it once. Do not put anything else in the upper filter tank, only filter cotton, and do not put any ceramic rings. The upper filter is pure physical filtration. You should know how to use reverse air lift. Fill the filter material. When cleaning, change the water once in more than half. Remember to control the temperature difference when changing the water. It is best to use a thermometer to compare the water temperature. After all, the amount of water change is large. Don't toss it afterwards. Reduce the usual feeding amount by half and maintain it for a week. Remember to feed less. Do not add any nitrifying bacteria products. Change the water by a quarter every day. This process lasts for about one to three weeks until the water quality is clear. Then you can slowly add a little food. To raise fish, you must first raise your heart. Don't be impatient. Slowly, there will be results. I raise 20 grass gold fish of nearly 20 cm in a 1.2-meter tank. The water is clear and beautiful. The important thing is maintenance. Feed less and change a bucket of water every day. There is no problem.

But your tank is not big enough, Luohan suggests you move the cleaned fish to another tank so that the cat won’t eat them.

2. I have seven koi in the tank. One of them has a big belly, tucks in its fins and lies on the bottom without moving. I changed the water salt to 3/1, but it didn't work. Can someone please give me some advice on what to do?

This is scale explosion disease. The big belly is ascites, which is a terminal illness and very difficult to cure. The only way is to increase the water temperature and improve the bait, but the hope of recovery is very small. This disease is not contagious, but it will basically lead to death. If the fish scales have exploded, as shown in the picture, there is really no cure. You can isolate it and try to increase the water temperature and improve the quality of the bait.

3. How many fish should you keep in your office?

The best is 7 black stripes, which represent wealth. If black stripes are hard to find, remember one thing: keep odd numbers instead of even numbers. Remember that mixed colors represent your messy affairs, so a single color is best.

4. I have 7 fish in my small fish tank, and the aerator makes the water turbid in one day. What should I do?

Your fish tank is small, and the fish can only be fed less food to keep the water clear. Or if there is no way to solve the problem of the oxygen pump, you can lengthen the pipe or make a few small holes in the pipe to reduce the amount of oxygen.