| Water filters are important for freshwater | | | | A short list of the most frequently used biological |
| aquariums, ponds, and fish tanks. By extending | | | | filters is below: |
| the period before which the water has to be | | | | Sponge filters: In these filters the water passes |
| replaced, these filters help to create appropriate | | | | through a sponge. Bacteria are allowed to grow in |
| conditions for freshwater fish, plants, etc. The | | | | these sponges. This type of a filter is a purely |
| freshwater requirements cannot be created as in | | | | biological one. You should never clean or dry the |
| the natural habitat; however, you can always | | | | sponge as this can kill the nitrifying bacteria. |
| adopt certain measures to enable freshwater | | | | Under gravel filters: These filters are also biological |
| aquatic life to nourish in the artificial arrangements. | | | | ones. These filters take water from the bottom |
| The filters help to remove waste from the water | | | | of the freshwater aquarium to the top. These |
| in the aquarium. In the natural fish habitat, there | | | | filters pass water from the gravel. You can also |
| are a lot of plants that help in preserving the | | | | look for the reverse under gravel filter. This filter |
| natural ecosystem. As the freshwater aquarium is | | | | works in the opposite direction to the original |
| on a smaller scale as compared to the natural | | | | under gravel filter. Such a filter brings water |
| habitat of the fish, filters make it necessary to | | | | through the gravel from the top of the fish tank |
| fulfill some of the necessary requirements for a | | | | towards the bottom. |
| freshwater aquarium. | | | | Canister filters: There is a container or basket in |
| Water pollutants, also depends on the type of the | | | | these filters that store different filter media. |
| aquatic life kept in the aquarium. For instance, | | | | These filters have a certain type of biological balls |
| goldfish produces a lot of waste. There are three | | | | that helps to grow the bacteria colony. You will |
| main types of filters. They are: | | | | not need to remove or clean the filter once a |
| 1. Biological | | | | bacteria colony is established in such filters. |
| 2. Chemical | | | | There are various kinds of freshwater aquarium |
| 3. Mechanical | | | | filters available in the market. By reading this |
| You will get a lot of help if you use all three types | | | | article you would have had a very good idea |
| of filters. The filters used in the freshwater | | | | about the types of filters mostly used. You need |
| aquariums these days use all three types of | | | | to decide about the filters based on your own |
| filters. | | | | requirements. |