Trying to get my TA down from 150 to around 60 or 70 and have added a gallon of acid the last 6 days and it will drop down but then go back up for some reason ,not sure why, im trying to get the ph down and aerate to get the ta down but it just seems to keep going back up. Anyways im turning the pump on recirc and adding a gallon at a time each morning but wondering if thats to much to add at once, my pools pretty decent sized 28-30,000 gallons with a pebbletec finish. Whats your take ? Thanks also would alot of natural rocks set in the pool change the chemical balance by chance ? thanks