How do you care for a pool while you are on vacation?

Run the system as normal but you may also add extra chlorine just before you leave. Or have a neighbor add about a gallon of chlorine or the same amount of chlorine you normally would use per each week you are gone. Of course, the amount of chlorine depends upon the size of the pool. You might also get him to brush or vac the pool ( with the added benefit of using it without abusing it).