I am running my pool pump from 9 AM to 9 PM. We are just trying to get our pool chlorine to stay at a maintenance level. We started with zero chlorine and are now using liquid chlorine per this forum. The bottle said to use the entire 128 ounce jug to shock the pool. That worked and registered on our Aqua strips but by the next morning the chlorine level is back to 0 to 0.5 ppm. the back of the chlorine bottle says to run the pump at night. How come we have to put in a gallon of chlorine a day to keep our levels up? I am in central Texas and I guess I need to know should I run my pump during the day or the night and how come it takes so much liquid chlorine (1-2 gallons) to keep it into the one to 3 ppm range?