Ok so this might be a dumb question, but am I supposed to shock the pool at a certain interval even though the pool water is fine? We have had our pool for 2 years now and are about to start the third season (90 degrees in Feb in Texas this year) and I was wondering if I should shock or not. We haven't had any problems with the water at all and the pool looks as sparkly as ever. When talking to my neighbors, they say they shock their pools every week so I was wondering if there is something I am missing.