I believe many friends use fish tank filter cotton, or in other words, it is necessary for basic fish farming. However, with so many available on the market, many people are not sure how to choose. Today, the editor will briefly summarize it for everyone.

Although there are many types of filter cotton, it not only plays an important role in ornamental fish farming, but also in water quality filtration. However, there are only two simple classifications for fish tank filter cotton.

1、 Fish tank filter cotton - physical filter cotton

Mainly used to filter out feces and food residues from ammonia nitrogen sources in fish tanks. Due to the filtration of these substances, their density is naturally higher, and some residues are not easy to escape, resulting in poor filtration efficiency. There are many colors on the market, such as blue and green, but the classic one is white. Some names sound good, such as magic carpet, magic bag, PP cotton, which are essentially physical filter cotton. Dense physical filter cotton.

2、 Fish tank filter cotton - biochemical filter cotton

This type of cotton is mainly used for cultivating nitrifying bacteria, and its density is not as high as physical filter cotton. Its internal expansion is a porous structure, typically made of rattan cotton, with a relatively large thickness, just to allow nitrifying bacteria to have more space to reproduce and expand their population. However, it should be noted that both biochemical filter cotton and physical filter cotton have the ability to cultivate nitrifying bacteria, but the structure of biochemical filter cotton is more suitable for the large-scale reproduction of nitrifying bacteria. In the filtration system, the more nitrifying bacteria decrease, the better.

Next, let's talk about how to scientifically place fish tank filter cotton.

Firstly, let's take a look at the working principle of the fish tank filter cotton. Simply put, fish tank filter cotton allows water to flow through and leaves behind "dirty things". We can put it in the filter tank like this:

Upper filtration: Due to the small space, place the filter material (such as ceramic ring) at the bottom, and place the second layer of biochemical filter cotton and the top layer of physical filter cotton. When changing water, simply lower the top layer of the physical filter cotton.

Drip box: This type of space is relatively large and was originally designed for large-area filtration. But more space is used for stacking filter materials, only one or half boxes are used to place filter cotton. According to the same principle, the biochemical filter cotton is placed in the middle, and the physical filter cotton is placed on the top for easy cleaning.

Layered drip box

Filter cartridge: Its principle is somewhat similar to that of a drip box, except that the water outlet speed is relatively fast, the water output is relatively large, the water droplets slowly seep downwards, the water flow is moderate, and the impact of the water flow inside the filter cartridge is relatively large. Therefore, the placement principle is the same as that of the drip box.

Bottom filtration: This type of filter has a strong filtering effect. Several segmented cylinders are used to fill the filter material. The placement order of filter cotton and filter material is as follows. The material closest to the water outlet is physical filter cotton, followed by biochemical filter cotton, and finally filter material. Because it is a water outlet and dirty, it is first physically filtered out to facilitate cleaning. Then, some substances in the water pass through the filter material, which is treated by nitrifying bacteria. Our company's main products include fish tank filter cotton, primary filters, activated carbon, air filters, filter cartridges, high-efficiency filters, etc. Welcome to contact us for purchase.