with tap water? Goldfish can be raised with tap water, because tap water is soft water, which is suitable for fish farming. But tap water belongs to drinking water, and some trace substances will be added when it is purified. Therefore, the newly received tap water contains a small amount of chlorine, although it is not harmful to people, but it is more harmful to goldfish. If breeders want to use tap water to raise goldfish, they should first remove the chlorine in the water, which can be removed by exposure to the sun, or by using dechlorination tools.
2. Groundwater: Groundwater is spring water or well water. This kind of water contains many trace elements, which can promote the growth and development of goldfish. But because the water quality of groundwater is generally hard, and the temperature is low, so the groundwater just pumped out can not be used for goldfish, breeders should be exposed to the sun for 2 days before use.