Ben is correct that I missed the posts about the Chlor-Brite. I now see the subsequent posts where you say you used Chlor-Brite. That is Dichlor where for every 10 ppm Free Chlorine (FC) it also increases Cyanuric Acid (CYA) by 9 ppm. So even with a low 0.5 ppm FC per day chlorine addition (and yours might be higher at 1 ppm), this is over 13 ppm CYA increase PER MONTH. So your CYA level may be very high and that makes the chlorine much less effective. I suspect you may have high Combined Chlorine (CC) as a result and that can be very irritating. After you get your Taylor K-2006 kit, you'll have proper readings for FC, CC, pH, TA, CH and CYA. We can then figure where to go from here, though I strongly suspect you'll need to replace more water to lower the CYA level.