I've been at my indoor facility for just over a year now, and since I've started we have never been able to maintain ideal TA levels. I've maintained many pools over the years and have never had this issue. We are constantly adding bicarb in order to bring it up, but it seems that after the bicarb brings it up it drops the next day. Our pH and Chlorine levels are always within ideal range, and hardly ever fluctuate. I wonder if it has to do with our incoming water? I've exhausted all options, we are CONSTANTLY adding bicarb. Anything helps!