First off, a huge thanks to everyone here at TFP...your knowledge has been indispensable. So, I am going on 3 weeks now of BBB. I did a 80% drain and refill 3 weeks ago to resolve a high CYA issue. Here are what my numbers were immediately after refill:
FC: 5.5
CC: 0.5
pH: 7.6
TA: 130
CH: 140...