PH is currently 7.6. I understand that to lower TA I need to lower PH, however our fill water comes from a limestone water table, so I think I will be constantly increasing TA with every backwash and top up. Should I be constantly adding acid to get the TA down or can I just accept and live with it. I reckon the PH is going to keep going up, so I will have to add some acid anyway to keep it down to the recommended levels.