We have a 14 month old pool and I have been successfully doing BBB approximately 11 months. Up until about a month ago TA was relatively stable around 100. In 10 months I probably added baking soda 2-3 times. Also until a month ago, PH was constantly rising to where I needed to add MA every 2-3 days. Suddenly PH was more stable and TA began dropping. At one point it dropped to 10. Now, I'll raise TA up to 110ish and it drops to 60 in 4 days. PH is back to rising fast...
What is up?
TA 60 (100 on Saturday)