If a third party does not purchase the property at the foreclosure auction, the lender takes ownership of it and it becomes what is known as a bank-owned property or REO (real estate owned). Bank-owned properties are sold in one of two ways.
Commercial pools are required to check chlorine levels every hour and record their findings in a log, however the backyard lifeguards should check their pH and chlorine levels at least twice per week. Chlorine should be fed continuously through a feeder device to maintain a consistent level.
Your swimming pool might increase in pH naturally as more people swim in it. This water movement and splashing around is called aeration and is used as one method of raising a pool's pH level. Some might say you can go swimming within 15 - 20 minutes after adding any chemicals, but it's better to stay safe.