Nitrifying bacteria and water purifying agent cannot be used together. Usually, water purifying agent should be used first, and then nitrifying bacteria should be used every other day. Because the water purifying agent contains certain bactericidal components, if used together, it may destroy the activity of nitrifying bacteria and affect the establishment of nitrification system. In addition, in addition to pouring the culture liquid, we should also pay attention to turning off the lights and exploding oxygen, so as to accelerate its reproduction.

1. Purifying water: The main function of nitrifying bacteria is to purify water. Although it can't make turbid water clear, it can eliminate invisible harmful substances. The main cause of water deterioration is ammonia nitrogen produced by organic matter decomposition, which can convert ammonia nitrogen into nitrate, thus preventing fish from being poisoned.

2. Decomposition of organic matter: Nitrifying bacteria usually do not participate in the decomposition of organic matter, or play a weak role, because there are other heterotrophic bacteria in the fish tank, which will give priority to decomposing organic matter, but when heterotrophic bacteria are scarce, it can also provide some help.

3. Adjusting microbial balance: If you want to raise fish for a long time, you should not only pay attention to the problem of fish, but also ensure that the ecological cycle in the tank is not broken, and nitrifying bacteria can adjust the balance. Stable flora can stabilize the water quality, thus ensuring the normal operation of the cycle.