Physical filtration process of fish tank filter cotton

Nowadays, the cultivation of ornamental fish is very common. In the maintenance of the fish tank filtration system, the filter cotton in the physical filtration part should be replaced for a long time. Many people believe that the thinner the filter cotton, the better. In fact, if it is thinner, it will be easier to isolate impurities and garbage, but at the same time, it is also easier to clog, so the cleaning frequency will increase, resulting in an excessive nursing burden. The selection of fish tank filter cotton and the role of physical filter cotton are so important!

Physical filtration process of fish tank filter cotton

In the physical filtration section, in addition to isolating visible impurities, it also participates in the decomposition of organic matter, which is carried out by heterotrophic bacteria. This is because the gaps in physical filtration are not too large, but if they are too small, heterotrophic bacteria will relatively increase. After all, the finer the cavity, the larger the space for the bacterial nest.

That is to say, when choosing physical filter media, not only should impurities be filtered, but also the role of heterotrophic bacteria should be considered. If the filtering cotton is not sufficiently filtered, a lot of organic matter will enter the biochemical filtration zone, which will lead to frequent water changes over time. If the decomposition ability is insufficient, it is easy to produce mold.

In summary, the main task of physical filtration is to filter out floating debris and small amounts of organic matter in water, absorb some harmful substances, reduce the burden of biochemical filtration, safeguard the virtuous cycle of water quality, and extend the service life of biochemical filter materials. It can be seen that physical filtration plays an irreplaceable role in the entire filtration system.

When designing physical filtration, we can consider a combination of coarse cotton and fine cotton, where coarse cotton is responsible for filtering large impurities and fine cotton is responsible for cultivating bacteria. Coarse cotton on top, fine cotton on bottom. Of course, this will mainly involve laying fine cotton with the assistance of coarse cotton. It is recommended to keep the water for use so that all visible impurities can be effectively filtered and not leaked.

In the physical filtration section, you can basically clean the filtration system once a year, not too frequently, and then you can directly replace it with coarse cotton, which can be 4 centimeters thick, and fine cotton can be 1-2 centimeters thick.

Cleaning of fish tank filter cotton

Cleaning: It is recommended to clean the physical filter cotton. Because its main function is to filter out "dirt", it is not the primary purpose of cultivating nitrifying bacteria. Just take it out and clean it. If necessary, you can disinfect it by boiling water and then put it back for use

Service life: Physical filter cotton needs to be replaced after wear and tear, but biochemical filter cotton can be used until it rots without the need for cleaning.

In fact, there is no fixed requirement for the time and frequency of cleaning the fish tank filter cotton, and it should be observed once a week. If the filter cotton turns yellow, the water quality is poor, and it is a bit turbid, you can take out the filter cotton and clean it. The specific cleaning method is as follows:

1. A typical filter cotton has two layers, the upper layer and the lower layer.

2. The upper layer can be removed and cleaned first. After cleaning, it can be placed on the lower layer and transferred from the lower layer to the upper layer. Cycle cleaning like this. Attention: If the filter cotton of the fish tank is not cleaned for a long time, the water quality of the filter cotton will deteriorate, and the living environment of the fish will greatly deteriorate, leading to death. Filter cloth filtration equipment is a precision filtration device that uses filter cloth as a medium. At present, commonly used filter cloth filtration equipment is mainly divided into fiber rotating filter cloth filters and vertical fiber filter cloth filters. Due to the use of 10 micron fiber filter cloth in the filter cloth filtration equipment, it is commonly used as a precision filtration device in sewage treatment plants. This device is fully automated and static. Filter cloth, surface backwashing does not require an external water source, and impurities and activated sludge attached to the surface of the filter cloth are absorbed by the strong suction of the self-priming pump. The device has a long service life and is easy to maintain.