. Under the normal ecological cycle, the organic matter in the fish tank, such as residual bait and fish feces, will be decomposed to produce ammonia nitrogen, which will be converted into nitrite and nitrate by nitrifying bacteria, so it will be acidic. In order to avoid this situation, the water needs to be changed regularly, and if the acid has fallen, the filter material should be cleaned.
in acidic water? 1. Lantern fish: Lantern fish is native to the Amazon River Basin in South America. It is a general term for small lantern fish. They have many species and different colors, especially suitable for raising in grass tanks. The common species of this kind of fish are head and tail lights, red tail glass, Baolian lights, traffic lights, black lotus lights, blue eye lights and so on.
2, bream: bream is a cichlid fish with a body length of about 4-10 cm, which is one of the fastest breeding fish in the world. This kind of fish needs to live in an environment with good water quality, usually feeding small live baits, water fleas, blood worms and so on, which can enhance its physique.
3. Colorful immortals: The length of the colorful immortals is about 20 centimeters, the body is nearly round, and the body color will change according to the illumination. It needs to use live bait, beef hamburgers and other food, change water regularly, so as to maintain water quality, and pay attention to the number and density of breeding.
