in the fish tank? If you want to change the water in the fish tank, you need to fish out the fish inside first, put them in other places for temporary breeding, then empty all the water, clean the fish tank, then inject the trapped water, put the fish into the tank, and rest for a week. It should be noted that the big change of water is very harmful to fish, if not special circumstances, try not to change so much, otherwise the survival of fish will be threatened.
1. Dead fish: If a fish dies in the fish tank, it is better to change the water if the cause of death can not be determined, so as to thoroughly improve the water condition and avoid the fish dying again. It should be noted that if only one fish dies, there is no need to change the water, only if the fish dies continuously.
2. Disinfection: If you want to disinfect the fish tank, you also need to change the water. Disinfection is usually due to the serious deterioration of the water quality. The ordinary water change has no effect, so you need to change it all. It should be noted that before injecting new water, the fish tank should be soaked in potassium permanganate for a period of time.
3. Turn over the tank: When there are some organisms that are difficult to remove in the fish tank, such as planarians, protein worms, snails, snails, etc., if you want to completely eliminate them, you need to turn over the tank, and turn over the tank to replace all the water, so that these organisms have nowhere to hide.
