okay i am new to this website, i have a 12x24 sport pool, 12,000 gallons, i had crystal clear water until the rains began in july, live in kansas city, i shock shock then its clear for a couple of days and then we go back to cloudy i can see the bottom i have a pool cleaner that cleans every morning and a auto chlorine dispenser, new sand in the filter, my free chlorine is always 0 when i take water sample in, i am spending way too much money getting this pool to stay clear! help! kerry