? It is normal for the first tank of bottom filtration to be full of water, because this filtration method adopts an overflow structure. Only when the first tank is full of water, it will enter the next tank, so as to ensure that the water flow passes through all the filter materials and efficiently filter out impurities, so as to make the water body clear. As the equipment with the best filtration effect, bottom filtration is particularly important for large fish tanks, which is almost necessary to better maintain water quality.
are needed for bottom filtration? 1. Filter cotton: Filter cotton is an essential filter material in filtration equipment. Its main function is to filter out impurities in water. When the water flows through, the particles are left behind, which makes the water clear. It should be noted that long-term use of filter cotton will be blocked, so it should be cleaned or replaced regularly.
2. Bacteria house: The bacteria house is responsible for the biological filtration in the filtration equipment. It is the place where nitrifying bacteria are cultured. Although nitrifying bacteria can not make the water clear, they can convert invisible ammonia nitrogen into nitrate which is harmless to fish. Therefore, it is also a very necessary filtration.
3. Medical stone: Medical stone is a kind of ore, which is non-toxic to organisms and contains various trace elements. It can also absorb harmful substances in water, even some bacteria, so it is of great help to the health of fish.
