This time let us introduce sponge filters. Sponge filters, also known as water fairy filters or pneumatic filter sponges, are efficient filtration devices suitable for small fish tanks. Its unique working principle is based on the water-lifting effect produced by bubbles rising in the water. This mechanism not only promotes the circulation of the water body, but also achieves effective physical and biological filtration, providing a good living environment for the organisms in the aquarium.
1.Basic structure of sponge filter
Sponge filters usually consist of three parts: main structure, filter cotton and air pump. The main structure is small and lightweight, and can be easily attached to the aquarium wall without taking up too much space. As a filter material, filter cotton is built into the filter to absorb and retain impurities in the water body. The air pump delivers air to the sponge filter through the air hose, producing a large number of tiny bubbles. These bubbles are the key to driving the water lifting effect.
2.How pneumatic filters work
The working principle of sponge filters is based on the water-lifting action of air bubbles as they rise. When the air pump is started, air enters the sponge filter through the hose, producing continuous bubbles. When these bubbles rise in the water, they create an upward traction due to the difference in density between them and the surrounding water. This traction force not only drives the bubbles themselves to rise, but also drives the surrounding water flow to rise together, forming an obvious water lifting effect.
As the bubbles continue to rise and the water lifting action continues, the water in the aquarium is continuously circulated. During the circulation process, the water flow passes through the cotton layer of the sponge filter. The fine structure of the filter cotton can effectively absorb and intercept suspended solids, organic matter and other impurities in the water body, achieving physical filtration. At the same time, the bacteria attached to the filter cotton can also decompose organic matter and convert harmful substances into harmless or low-harm substances, completing the biological filtration process.
3.Advantages of pneumatic filters
- High efficiency and energy saving: The sponge filter uses the natural water lifting effect caused by the rising bubbles to filter, without the need for additional power equipment, so it has the characteristics of high efficiency and energy saving.
- Wide application: Due to its simple structure, easy operation and low cost, sponge filter is especially suitable for small fish tanks and occasions that require auxiliary filtration. Whether you are a home fish enthusiast or a commercial aquarium, you can choose the appropriate sponge filter according to your actual needs.
- Oxygenation effect: While lifting water, the rising bubbles also play the role of oxygenation. When the bubbles burst in the water, they release oxygen, increasing the dissolved oxygen content in the water and providing a more adequate oxygen environment for aquatic organisms.
- Easy maintenance: The filter cotton of the sponge filter can be taken out, cleaned and replaced regularly to maintain its good filtration effect. When cleaning, just rinse gently with clean water without using chemical detergents.
