What should swimming pool chlorine level be during winter when pool is covered?
To keep your pool clean and clear it is important to keep your pool’s ‘free’ available chlorine levels at a constant level of two to three parts per million (PPM) at all times during winter. If you’re using a salt chlorine generator and a pool blanket, remember to reduce the output of the chlorinator to one to two PPM, as pool blankets trap pool chlorine levels to occur resulting in significant damage to pool equipment if not monitored carefully. There are some pool chemical retailers that offers some guidelines in winterizing your swimming pool.