The first type: self-built waterfall trickle filtration

Build a drip tank or frame above the fish pond, place a submersible pump at the far end of the fish pond and discharge the water into the drip tank. Trickle filtration needs to be divided into several layers. The first layer is generally filter cotton, followed by water droplets, activated carbon, bacteria room, ceramic ring and so on. In this process, the filter cotton plays the role of filtering most impurities and needs to be replaced regularly. The most important function is the home of bacteria, which can remove some harmful bacteria from water.

However, this self-built thing has several shortcomings, the later maintenance is very troublesome, and it occupies a large area and is not beautiful. It is more suitable for particularly large ornamental fish farms, or fish lovers who like DIY, but not for ordinary family fish ponds.

The second type: biological sand filtration system

This kind of filtration system is connected to the water pump through many pipes and laid at the bottom of the fish pond, covered with quartz sand and pebbles. A filter bed is formed at the bottom of the fish pond, and the filtering effect is achieved by cultivating nitrifying bacteria at the bottom of the fish pond.

Many people will think that this has obvious advantages over waterfalls and does not take up space. However, these pipes at the bottom of the fish pond are easily blocked and it is equally troublesome to clean up. The most important thing is that the decomposed substances are not taken out of the fish pond, but remain in the pond.

The third type: traditional overflow filtration system.

A filter bin with a volume of one third of the fish pond is built next to the fish pond. Overflow filtration system is generally divided into sedimentation bin, physical filtration bin, biochemical filtration bin, clean water bin, sterilization bin, extubation bin and sewage bin. Mainly use brush, rattan cotton, bacteria room and other filtering materials. So many warehouses mainly play the role of physics and biochemistry (so learning physics well is not afraid to travel all over the world. )。

The disadvantage of this kind of filtration system is still that it occupies a large area and needs regular cleaning and maintenance. Even better, the system is very stable.