Lowering pH is done with muriatic acid (read the link in my sig) or dry acid. Baking soda raises alkalinity. Yours is already high, so I wouldn't add any more. Odds are pretty good that your cloudiness is either dead algae from the last bloom that just needs time to filter out, or possibly algae that didn't get killed off. Try measuring your chlorine at night after the sun is off the pool, and then measure it again in the morning before the sun hits the pool. Compare those two numbers, and it will tell you if you have algae still trying to bloom (there will be more than a 1 ppm difference in the numbers).

Janet