Chlorine levels finally looking right and holding overnight. I worked on lowering pH slowly with muriatic acid over the weekend...still have a little to go. This morning I moved the return eye up so it's shooting upwards and bubbling hard at the surface for aeration. Here are current readings.

FC = 12
CC = .5
TC = 12.5
pH = 7.5
TA = 500

Will the lowering of pH and TA make the water more acidic and aid in brushing away of the sandpaper like rough spots?