2. Avoid great changes in water quality and beneficial bacteria in water. In addition, it should be noted that there are more fish in the fish tank, so there are more impurities. At this time, it is better to put a few more layers. It depends on the size of the fish tank and what kind of fish to raise. Generally, the second to fifth floors are more suitable. 95% impurities in the fish tank are filtered by the filter cotton to prevent them from entering the fish tank again. Whether using the upper filter element or the filter cartridge, this kind of filter cotton is an essential filter material, and at least two layers should be laid during use. Before using the new filter cotton, clean it with clean water or waste water from changing the fish tank, and simply rub it to clean the dust on the cotton and the dust just produced by the product.
3. Don't change the filter cotton in a hurry after cleaning. Xiaobai simply finds a washbasin or container to soak the filter cotton for a long time, and then simply cleans it and puts on a new filter cotton. Before using the new filter cotton, clean it with clean water or waste water from changing the fish tank, and simply rub it to clean the dust on the cotton and the dust just produced by the product.
When placing filter cotton, some farmers think that the more filter cotton, the better. In fact, this is a misunderstanding, which is not the case. In a fish tank with reasonable feeding density, there is no need to put too much filter cotton. If it is placed too much, it will not only fail to play its due role, but will cause certain harm. For example, filter cotton has many layers, which will hinder the water flow. The more layers, the greater the influence on water flow. The filter cotton in the lower layer has no way to contact the water flow and impurities at all, which will cause unnecessary waste. If the quality of filter cotton is not very good, it will rot easily over time.