Nowadays, the various styles of fish tank filter materials are dazzling. No matter what kind of filtration method, even if there is no biochemical filtration, there must be physical filtration. Physical filtration mainly uses white cotton as the filter material, and no matter how good quality white cotton is, it can only block some visible garbage, and some dust-level garbage will flow to the next grid with the water. How should it be solved? This requires today's protagonist-filter brush to debut. How to use the filter brush in the fish tank? Don't worry, the editor will tell you: The first compartment of the filter tank is filled with brushes side by side. The combination of the special structure of the brushes can form an invisible 'barrier'; water seems to flow easily, but in fact, no matter where it flows from, it will pass through the 'blocking' of the filaments, and the water flow must pass through an intricate array of brushes. To reach the next level. And the water flow in the brush array becomes slow, which plays a role of physical precipitation. Over time, the garbage will settle at the bottom of the first grid, and then regularly discharge the garbage, you can reach a virtuous cycle. The service life of the second biochemical filter material will also be greatly improved, and it can reach more than 3 years without cleaning and replacing. Filter brush, also known as elastic filler, is a new type of brush cleaning and filtering application product. It is mainly used for water quality filtration and purification treatment of rivers, rivers, lakes, seas and various pools and fish ponds; at the same time, it is also suitable for anaerobic, facultative and aerobic treatment of various sewage. It is made of steel wire as the skeleton, with many neatly arranged and outwardly stretched wool filaments on it. The cleaning and filtering effect of the bristle brush is better than the traditional adsorption ball and biochemical cotton. Mainly reflected in the following points: 1. The service life of the filter brush is longer. According to the environment and processing capacity, it can generally be used for 3-5 years; 2. The oxygenation performance of the filter brush is better. The membrane is easy to update, simple in operation and management, corrosion-resistant, non-clogging, non-agglomerating, etc.; 3. The four grooves in the green and environmentally friendly crosshairs can effectively resist the horizontal direction (inlet and outlet water flow) and vertical direction (produced by aeration). The current washes away. In the early stage of film formation, nitrifying bacteria are more prone to parasitise and multiply; and the edges and corners of the wool have a cutting effect on bubbles, which improves the utilization of dissolved oxygen; 4. During the production process of the wool, a hydrophilic and biophilic inhibitor is added. And some nutrient-relieving elements can better promote the growth and metabolism of microorganisms and increase the amount of microorganisms.