Generally speaking, the water used for raising guppies at home is tap water. And tap water contains a lot of chlorine, if not after dechlorination is used to feed fish, chlorine will make fish poisoning. Therefore, the water for feeding guppies must be dechlorinated before it can be used. The best way to get rid of chlorine in water is to put it in the sun. With the help of sunlight, the residual chlorine in the water can be volatilized, and the dissolved oxygen in the water will be increased. The water after sunshine can be used to feed fish.
Generally speaking, after tap water is dried for 24 to 72 hours, the chlorine and other chemicals in the water are almost volatilized. However, the light intensity of different seasons is different, so the time of drying in each season is also different. For example, in summer, the sun's light is relatively strong, as long as the new water drying 1 to 2 days can be used. In spring and autumn, the sunshine is relatively mild, about 2 to 3 days. But in winter, the intensity of sunshine is small, and the temperature is low, which is not conducive to gas volatilization. Therefore, it takes a long time to dry, at least three days to dry. If you want to shorten the drying time, you can put an air pump in the new water to improve the speed of gas exchange, thus promoting chlorine removal.