Gradually over the season my TA has dropped from 70 to 50 due to dilution from rain (had to pump out excess water on several occasions this season; not unusual for here). As usual, pH has remained very stable, 7.4-7.5, the entire season without having to add any MA.
Is there any reason I would need to adjust TA back up to 70? Or just leave it where it is?
Edit: if it matters, borate is at about 40ppm per today's test.