Here are today's results: FC 19.50, CC .05, PH 7.5, TA 170 (we've been aerating to bring it down), CYA 50, CH 210, Iron 0 and Copper 0.3. The pool is orangey stained but crystal clear and today I sprinkled just a tad bit of AA in the 4 man spa (combination pool spa) just to see if the water was...