To make the water of guppy weakly alkaline, breeders can choose to use coral bones. Coral bones can adjust neutral or weakly acidic water to weakly alkaline, and breeders can put them directly into water or filter tanks. Coral bones are all left after the aging of natural corals, which will not affect the health of guppies. However, coral bones have many small holes, which breeders need to clean regularly to avoid breeding bacteria.

Some chemicals that regulate water quality can also be used, such as alkali regulators. Although this chemical takes effect quickly and is convenient, it is easy to cause harm to guppy, so it is not recommended to use it more.

Breeders can also use some olive leaves, which fall to the ground naturally and belong to natural alkali regulator, which will not affect guppy. However, Elemene leaves can not be used for a long time, and will slowly dissolve in water in about one month. Breeders need to add them regularly to ensure that the water quality is always weakly alkaline. In addition, the water in the fish tank will become yellow after the use of olive leaves, which will easily affect the ornamental value.

The pollution of guppies to water quality is not serious. When artificially cultured, you can choose to change water once every 3-5 days, and the amount of water change each time should not be too large, and it can be controlled at one third of the total water quantity. If a circulating filtration system is installed in the fish tank, the breeder can choose to change the water every 5-7 days, and if there is no filtration system, it is necessary to change the water every 3 days or so.