I have a 24 x 52 Round ABG Pool and I am having to raise all my levels so I am starting with TA first. It is slowly coming up and my TC is good and my FC is too but my PH is very low. Every one is saying add PH decreaser. Is this correct? Also when I started the water was crystal clear but now after adding the chemicals to raise my TA the water is becoming green. HELP!! This is costing me tons of money and my kids really want to swim.