So - curious where the additional T/A came from to lift my pH to almost 8 over the last couple of weeks.
Alk = 80ppm
pH = 7.2
After that, I did the Bo Treatment.
pH=7.6 (down from ~8.0 via 4 Gallons HCl over the last few days)
T/A at ~140-150 - has hardly budged with the recent acid additions and running the falls for 4-6 hours/day...
<edit> FYI - I did check the fill water - have added about (est) about 4-5K gal to cover evap over the last couple of months - fill's T/A is around 200... this may explain a small rise, but not 70ppm.