I'm a newer member of this site so I have a few questions. I am having people over tomorrow for a party. My Cya is around a 45 so I have been keeping my chlorine at about a 6. Should I bump up my chlorine up before the party? Also, I used to shock the pool after having a lot of people in the pool. Should I still do that, or just make sure my chlorine level does not go below a 4.