Preparation materials: large mineral water bottle, knife, small mineral water bottle, cotton, filter material and scissors.

1. First, use a knife to open a small mouth at the bottom quarter of the big mineral water bottle, which is just suitable for the bottle mouth of the small mineral water bottle.

2. Remove the bottom of the small mineral water bottle with a knife.

3. The small mineral water bottle is connected to the bottle mouth of the large mineral water bottle.

4, small mineral water bottle mouth stuffed with cotton.

5. Cut the filtered water filter into small pieces, which can be put into a big mineral water bottle, and the simple filtration system of the fish pond is completed.

Fish pond filtration system

According to the different feeding environment, koi fish's filtration system is also different. Generally divided into physical filtration, precipitation filtration, biochemical decomposition filtration, cup filtration system, sterilization and algae removal. Some fish friends use fish tanks, and some qualified lovers use fish ponds. How to choose the correct feeding mode and filtration system is the most important link in koi fish. Firstly, the classification of filtration system is introduced.

1, physical filtration, as the name implies, is to filter out impurities, leaves, fish manure and water garbage in the water body by physical means, and then collect them together after filtration, which will increase the transparency of the water body and facilitate management.

2. Biochemical filtration. The so-called biochemical filtration refers to the decomposition and transformation of nutrient-rich substances, fish urine, toxic gases, toxic ammonia and nitrate in water through the biochemical decomposition of dozens of species such as various water purification bacteria, calinet nitrifying bacteria and Cali photosynthetic bacteria.

Refer to the above contents: sogou-fish pond filtration system