When raising fish, if you want to keep the water clear all the time, there are some tools you can use, such as filter cotton. Their role is to filter impurities, can use their own body to block impurities in the fish tank, thus playing a role in purifying water quality. However, they can not always be clean, and some impurities, bacteria and so on will be attached to them. Therefore, regular cleaning is also needed in the process of use. In fact, there is no certain frequency of cleaning filter cotton, and there is no fixed requirement. They can be observed once a week or so, and if they are very dirty, they can be cleaned. If the water quality is poor, you can observe it once in a few days and clean it up in time after it is dirty.
The filter cotton comprises an upper layer and a lower layer. In the process of cleaning, the upper layer can be cleaned first, and then placed in the position of the original lower layer. Then clean the lower layer and put the lower layer in the position of the original upper layer. That is, they need to be cyclically cleaned and their positions changed after cleaning.
In the use of filter cotton, they will inevitably be dirty. Although they can be cleaned, sometimes they can not be restored to their original clean state, at this time they can be thrown away directly and replaced with a new filter cotton. In fact, the filter cotton should be replaced regularly, but the frequency of replacement is not certain. For example, if the material is synthetic fibers, then it is recommended to replace once a month; If the material is polyester foam, it is recommended to change it once every three months or so. No matter what material, generally speaking, can not be used for a long time, because their filtering effect will gradually weaken.
