1. Filter cotton: The most common filter material for raising guppy is filter cotton. Because this kind of filter material is relatively common, and the price is relatively cheap, suitable for most filters. Although filter cotton is commonly used, it should be replaced regularly when in use to avoid bacteria breeding for too long.

2, coral bone: Coral bone is also a common filter material, which can raise the PH value and maintain the hardness of water quality. Using this filter material can make guppy live more comfortably. However, coral bones should be cleaned regularly to play a filtering role.

3. Bacterial house: Bacterial house is mainly for cultivating nitrifying bacteria. As long as there are enough nitrifying bacteria in fish tank, the water quality will naturally get better. However, the bacteria house is only suitable for bottom filtration, back filtration or turnover box, and is not suitable for trickling filtration, waterfall filtration and upper filtration.

Water goblins can be selected for raising guppy. Waterfall filtration and external micro-filter cartridge are more appropriate, because guppy doesn't eat much, pollutes water quality seriously, and their metabolism speed is not fast, so breeders only need to use small and medium-sized filters to ensure the clean water quality of their life.

Many breeders will choose water goblins when breeding guppies, because water goblins are small in size and do not cause too much water flow, and they can also provide a place for nitrifying bacteria to live, which is of great benefit to the growth and development of guppies.