fish tank, and different kinds of filter materials have different replacement cycles. If it is filter cotton, it will be blocked for a long time, but it can be dredged by cleaning, as long as it is washed thin, it needs to be replaced, so it only needs to be replaced once a year or two. If it is activated carbon or medical stone, the adsorption capacity is different, usually changed once every 3-6 months. Bacterial houses generally do not need to be replaced unless acid drops occur.
are needed for fish tanks? 1. Filter cotton: Filter cotton mainly plays the role of physical filtration, which can filter out impurities in water, thus making the water clear. This filter material must be placed in the first layer, because it will be blocked for a long time, it is best to clean it regularly, but too much washing will make it thinner, so we should pay attention to replacement.
2. Activated carbon: Activated carbon is not necessary for fish tank filtration. Its function is to adsorb impurities and harmful substances in water, which can be replaced by other means. And its service life is not long, and it will be saturated after a long time, so it needs to be replaced.
3. Bacteria house: Bacteria house is mainly used for biological filtration. Although the organic matter in the fish tank will be decomposed by microorganisms, it will produce ammonia nitrogen to poison the fish. In order to avoid this situation, it is necessary to cultivate nitrifying bacteria in the bacterial house, which can convert ammonia nitrogen into nitrate.
