I'm still a rookie in pool care having owned my pool for a couple of months last summer and this summer. The question I have is 48 to 72 oz of liquid chlorine per day normal to maintain a 4ppm? My cya went high so I stopped using chlorine tabs. My readings are: total chlorine 4, free chlorine 3, ph 7.2, alkalinity 120, and CYA is between 50 and 100. This is my first post so please forgive for any errors.