Thanks to my extensive use of chlorine pucks from before my enlightenment, my CYA is 160. I have been slowly getting it down, it was probably in the 250-275 range. I had very low pH and TA also and got that corrected, in the meantime my pH has risen beyond my target (it's 8.0 now and TA is also a bit high (110). So my question is, do I put in some muriatic acid now (lower pH to 7-0 - 7.2 and aerate to raise the pH) or, just continue to drain and refill to get my CYA into the 30-50 range? In other words, there is still so much water replacing to be done, does it make sense to spend any energy on the alkaline issues at this point?