1, the fish tank should be disinfected before use (brush with potassium permanganate water, then soak the fish tank with low concentration potassium permanganate water for about one day).
2. Choosing fish is also very important. Sometimes the fish you choose to go home is sick. This requires a lot of experience, and I can't explain it clearly for a while. )
Take this new fish home. At this time, it should be noted that the water temperature in your fish tank has reached the temperature suitable for the growth of your small fish (tropical fish is suitable for 26 degrees plus or minus 1 degree, not absolute). Don't open the bag, put it in the fish tank together, float 10 for 20 minutes, then pour the fish into the tank, and then don't feed it twice a day.
4, change the water, change one-third or one-half of the water in about three days, be careful not to use the tap water just taken out. After the tap water is taken out, it is best to leave it for two or three days before changing it for the small fish. Because tap water contains many substances harmful to fish, another is to pay attention to the temperature control of changing water. The water temperature of fresh water and the water temperature of the original water tank should not differ by plus or minus 65438 0 degrees.
5, pay attention to the problem of oxygen consumption of small fish, if there are more fish, you have to increase the oxygen pump to supply oxygen.
6. After the fish gets sick, go to the fish shop to consult the medication in time. (consult more, one is to increase experience, and the other is to prevent being cheated. )
According to the above knowledge, see what you did wrong! !