Q. How long does liquid chlorine take to work?

Answer

For the liquid chlorine to work and spread all over the pool, generally takes around 4-5 hours after which people can then use it. However, it is good or ideal to wait for one complete turnover before using the water as this is the time it takes for the water to fully get filtered. The same goes with swimming and it said that it is safe to use the pool when the chlorine levels are found to be about 5 ppm.