I haven't posted here for a really long time.
My son got sick and took me away from my tanks. But now we're back in the game. The tanks never went away..... just got less attention.
I find, for me, that my pH is highly dependent upon my salt choice. i.e. I have one tank that currently has 80% of my preferred salt mix, and only 20% of the temporary replacement salt mix, and it has a pH of 8.3. My other tank, which required more water changes, has 80% new salt mix and 20% old salt mix. It's suffering along at 8.0 or below at times. When I have the right salt, I NEVER have to even think about my pH. Without the right salt, I fight pH all the time - even with everything else in place correctly.
But that is my 2 cents...
Salts that don't work for me: Brands similar to Instant Ocean.
My preferred salt: Coralife
That doesn't mean it is the right salt for you, but after 10 years in this hobby, I have found that to be the biggest factor for me.