So we have been fighting a bit of algae and a pump problem that was finally repaired yesterday. Oir 18,000 gallon pool isn’t totally green but the floor of the pool dusts up green. The chlorine is at 5 or more and doesn’t change after waiting and we kept it high while pump broken to fight more algae and it seemed to work. My issue is that the TA is 230 and the PH is at 7.5. The PH has been stable for days despite the high TA. think I need to lower the TA with diluted muriatic acid but how much? Can I use my dolphin to aerate after to raise the PH? Timing on everything appreciated. Newbie to avoiding pool store bc I think their advice is what caused the TA spike. Have five part test. Ordering the more expansive one! TIA.