Maintain your chlorine at a level at 1ppm to 3ppm. The maximum chlorine level for your pool is 5ppm. If the chlorine falls below 1ppm, there won’t be disinfectant to kill the bacteria that is introduced into your pool.
The chlorine usage in your pool can vary depending on the weather, the number of bathers and how much debris and dirt is in the pool. Everything that goes into your pool uses up the chlorine.