"If a swimming pool is opened properly ... Calcium hardness should be 150 to 250 parts per million, and chlorine should be 1 to 3 parts per million. The filter should run for several days before ...

Pool Corp. engages in the wholesale distribution of swimming pool supplies ... maintenance products such as chemicals and replacement parts, discretionary products like packaged pool kits ...

Maintaining a swimming pool goes beyond keeping the water clear and free of debris. The true foundation of a safe and healthy ...