It can be used for a day and a night. As long as there is sunshine during the day, the residual chlorine can be guaranteed to dissipate in a day. However, this is often related to the temperature, if the temperature is relatively high, the time of water trapping can be shorter, if the temperature is low, the time of water trapping will be longer. For example, one day in summer is enough, but three days or even a week in winter, so as to ensure that chlorine volatilization is clean.
1, exposure: As mentioned above, the purpose of trapped water is to remove chlorine, and exposure can increase the water temperature and accelerate the volatilization of chlorine, which is the best choice for trapped water. It should be noted that with the increase of temperature, the dissolved oxygen in water will decrease, so exposure will not only remove chlorine, but also reduce the oxygen content, so it also has a certain negative effect.
2. Oxygenation: Oxygenation is the second choice for dechlorination. It is very efficient. It only takes a few hours to complete the dechlorination work, and it also increases the oxygen content in the water body. The only problem is that it has certain requirements for the oxygen pump, if the power is not up to standard, the effect may not be satisfactory.
3. Medication: The efficiency of drug chlorine removal is also very high, but the dosage is difficult to control, so it is not recommended to use. Once some drugs are excessive, they may cause some harm to fish.
