Reverse air lift filter is better for ceramic fish tank. Ceramic fish tank is usually not very large, so the demand for filtration is not very high. Although the anti-gas lift is relatively small, it is OK to put it in a small fish tank, and it is convenient to install and does not need too much equipment. If the fish tank is slightly larger, or there are many fish raised, it is necessary to install other filters. External filter barrels can be considered, which will not occupy the space in the fish tank.

1. Physical filtration: Physical filtration is an essential filtration in fish tank, which is mainly responsible for filtering out impurities in water, such as fish excrement, residual bait falling into water and other particles. Filter cotton should be used for physical filtration, and filter cotton should be cleaned every other period of time. It is best to use the original tank water, so as not to affect the nitrification system.

2. Chemical filtration: Chemical filtration is similar to physical filtration. It is mainly responsible for adsorbing harmful ions, which is also an area that physical filtration cannot filter out. The filter materials of chemical filtration are generally activated carbon, ammonia-absorbing stone, etc. Their adsorption capacity is limited, so it is necessary to take out and replace them in time after saturation, otherwise harmful substances will be released.

3. Biofiltration: Biofiltration refers to nitrifying bacteria. Nitrifying bacteria need to be cultured when opening the cylinder, and the culturing place is the bacteria house. Bacterial houses can provide attachment for nitrifying bacteria. It should be noted that it is easy not to replace the bacteria cleaning house, otherwise the water quality will fluctuate greatly.