The water in the tank is introduced into the filter tank through the net, filtered by the filter system, and then pumped back to the fish tank by the water pump. In this process, it went through two forms of water quality filtration, physical and biochemical, and fed nitrifying bacteria in biochemical filtration, and the safety of water quality was also consolidated.
The arrangement order of filter materials in the filtration system is still very particular. It is suggested to seal the outlet with stockings for the first filtration, and then put the white filter cotton → black filter cotton → rattan cotton → ceramic ring in the first filtration tank in turn. White cotton is placed in front to observe the filtering situation more intuitively.
If this filter is simple, it can only put black and white cotton. In the second filter tank, rattan cotton → biochemical ball → ceramic ring → bacteria room, etc. Put them in turn, separated by white cotton, which is convenient to grasp the implantation of nitrifying bacteria in the filter material. When cleaning is needed, just wash the white cotton.
The third filter tank water pump → biochemical ball → heating rod, etc. Heat pumps can also be placed in gaps between grids, depending on the size of your bottom filter tank. Simple three-cell filter tank design, more cells, and two-cell filter materials can be added with coral bone, quartz stone, activated carbon and other filter materials. If there are four grids, you can put these filters in the third grid to form a single grid.