It likes neutral and alkaline environment, so they can be raised with groundwater or well water. Before changing the water, you should keep the water first. Groundwater or well water must be dried for several days before it can be used. When changing water, the old water can not be replaced completely, otherwise the water quality and temperature will change dramatically, which will do great harm to the fish.
Therefore, every time you change the water, you only need to pump out one third or one quarter of the water in the fish tank, clean up the dirty things in the fish tank, and then slowly pour the new water into the fish tank. The temperature difference between new water and old water should be between 1 and 2 degrees Celsius, so as to avoid the discomfort of fish caused by sudden temperature change.
Groundwater and well water contain a lot of chlorine, they can not be directly raised. Before use, it must be dried for several days until the chlorine in the water is completely removed. And the temperature of groundwater and well water is relatively low, which is quite different from the water temperature in the fish tank. Direct pouring will cause the temperature of the whole water body to drop suddenly, and the fish can not adapt to it, which will cause many diseases. Therefore, the temperature of the new water must be adjusted to be roughly the same as that of the old water before it can be poured into the fish tank. When changing water, the speed must be slow, it is best to inject slowly along the wall of the fish tank. Because guppies are very timid, if they pour water too fast, it is easy to frighten them.
