I recently purchased a home with an in-ground pool that was converted to salt a couple years ago. Every time I have the water checked there is very little or no chlorine. I live in North GA so it can be kind of hot this time of year. How long each day should I run the pumps? The pool sweep is on a mechanical timer and that is the only time it will generate chlorine. Also, how long should a chlorine generator last? it's a Hayward 15... with a three year warrantee...hopefully for than 3 years for the price of them.