I have been told by a few people that uor water is more irritating to eyes than normal, and suits are wearing out too fast. Here are some facts: 100k gallon pool, plaster, indoor, heated to 86-88 deg year-round, remodeled about 1 year ago, liquid chlorine (no salt),high-rate sand filters without any DE added (yet). Water is always clear, pH 7.2-7.6, TA 80-100, Calcium 250, FC 2-5 ppm, old test kit with a Taylor K-2006 on the way. My old kit does not detect any combined chlorine, but I do not trust it. Swim team practicing about 14 hours per week sweating in the very warm water. About 25 water aerobics seniors 3 times a week, plus about 150 other kids/week.
About all I add to the pool is NaOCL, HCl, sodium bicorbonate, and calcium (and water). I never have to add anything to increase the pH. On the contrary, I have to add almost as much HCL as I do NaClO (12.5%). I have been told by several reputable people over at the Pool Forum (which I just joined) the the Net effect of NaOCL on pH should be zero, so I am wondering what is up. The pool was allowed to have very high chlorine before I came on, and Chlor-out was used.
I have searched the forums some and noticed that a low TDS = osmotic pressure on the eye. I guess that my TDS may be low since the water was new about 14 months ago.