The fish tank must be disinfected first, especially the old fish tank, there may be some bacteria inside, if not disinfected, it will be harmful to the health of the fish. First, fill the fish tank with water, then add potassium permanganate, soak for 3-4 hours, and then drain the water. Then rinse it with clean water, and you can prepare the water.
Fill the fish tank with water, and then put it in a sunny place to dry, which can accelerate the volatilization of chlorine in the water. If fish are raised in untreated water, they will easily die. In addition, if you want to raise tropical fish, it is best to use a heating rod to preheat it.
In addition to good water, there should be a good nitrification system in the fish tank. Add the right amount of nitrifying bacteria to the water, then put a little fish food, and turn off the light to explode oxygen. The purpose of putting fish food is to let heterotrophic bacteria break down organic matter and produce ammonia nitrogen, at which time the water will become cloudy. After that, nitrobacteria will convert ammonia nitrogen into nitrite, further into nitrate, and the water quality will gradually become clear, thus completing the work of bacteria cultivation.
After completing the above steps, the water is already suitable for fish, but to be on the safe side, it is best to put a few fish into the tank first, let them test the water. Generally, it is necessary to use fish suitable for extensive management, as long as they do not get sick and die in half a month, they can put other fish. If the water test fails, open the cylinder again.
